| Abies balsamea (L.) Mill. | 981 images |
| Abies grandis (Douglas ex D.Don) Lindl. | 602 images |
| Abies lasiocarpa (Hook.) Nutt. | 172 images |
| Abronia latifolia Eschsch. | 187 images |
| Abronia umbellata Lam. | 155 images |
| Acer circinatum Pursh | 398 images |
| Acer glabrum Torr. | 154 images |
| Acer macrophyllum Pursh | 1120 images |
| Acer negundo L. | 16839 images |
| Acer spicatum Lam. | 441 images |
| Achillea alpina L. | 19 images |
| Achillea millefolium L. | 25485 images |
| Achillea ptarmica L. | 3296 images |
| Achlys triphylla DC. | 85 images |
| Acmispon americanus (Nutt.) Rydb. | 26 images |
| Aconitum columbianum Nutt. | 172 images |
| Acorus calamus L. | 693 images |
| Actaea elata (Nutt.) Prantl | 23 images |
| Actaea rubra (Aiton) Willd. | 722 images |
| Adelinia grande (Douglas ex Lehm.) J.I.Cohen | 362 images |
| Adenocaulon bicolor Hook. | 148 images |
| Adiantum capillus-veneris L. | 3168 images |
| Adlumia fungosa (Aiton) Britton, Sterns & Poggenb. | 8 images |
| Adoxa moschatellina L. | 778 images |
| Aegopodium podagraria L. | 12542 images |
| Aesculus hippocastanum L. | 17434 images |
| Agalinis aspera (Douglas ex Benth.) Britton | 1 images |
| Agalinis purpurea (L.) Pennell | 168 images |
| Agalinis tenuifolia (Vahl) Raf. | 102 images |
| Agastache foeniculum (Pursh) Kuntze | 1946 images |
| Agastache urticifolia (Benth.) Kuntze | 102 images |
| Agoseris aurantiaca (Hook.) Greene | 46 images |
| Agoseris glauca (Pursh) Raf. | 33 images |
| Agoseris grandiflora (Nutt.) Greene | 58 images |
| Agoseris heterophylla (Nutt.) Greene | 45 images |
| Agrimonia gryposepala Wallr. | 326 images |
| Agrimonia striata Michx. | 18 images |
| Agropyron cristatum (L.) Gaertn. | 120 images |
| Agrostemma githago L. | 4136 images |
| Agrostis capillaris L. | 1662 images |
| Agrostis exarata Trin. | 11 images |
| Agrostis gigantea Roth | 151 images |
| Agrostis mertensii Trin. | 10 images |
| Agrostis microphylla Steud. | 2 images |
| Agrostis pallens Trin. | 4 images |
| Agrostis scabra Willd. | 2 images |
| Agrostis stolonifera L. | 390 images |
| Agrostis variabilis Rydb. | 1 images |
| Aira praecox L. | 110 images |
| Ajuga reptans L. | 22207 images |
| Alchemilla arvensis (L.) Scop. | 500 images |
| Alchemilla australis (Rydb.) Bomble | 63 images |
| Alchemilla monticola Opiz | 760 images |
| Alchemilla subcrenata Buser | 70 images |
| Alisma gramineum Lej. | 25 images |
| Alisma triviale Pursh | 35 images |
| Alliaria petiolata (M.Bieb.) Cavara & Grande | 31614 images |
| Allium acuminatum Hook. | 56 images |
| Allium amplectens Torr. | 31 images |
| Allium cernuum Roth | 238 images |
| Allium crenulatum Wiegand | 20 images |
| Allium geyeri S.Watson | 3 images |
| Allium schoenoprasum L. | 4643 images |
| Allium stellatum Nutt. ex Ker Gawl. | 19 images |
| Allium validum S.Watson | 49 images |
| Allotropa virgata Torr. & A.Gray | 10 images |
| Alnus alnobetula (Ehrh.) K.Koch | 1695 images |
| Alnus incana (L.) Moench | 2539 images |
| Alnus rubra Bong. | 47 images |
| Alopecurus aequalis Sobol. | 136 images |
| Alopecurus arundinaceus Poir. | 32 images |
| Alopecurus carolinianus Walter | 4 images |
| Alopecurus geniculatus L. | 128 images |
| Alopecurus magellanicus Lam. | 12 images |
| Alopecurus myosuroides Huds. | 560 images |
| Alopecurus pratensis L. | 2910 images |
| Alyssum alyssoides (L.) L. | 1134 images |
| Alyssum desertorum Stapf | 24 images |
| Amaranthus albus L. | 512 images |
| Amaranthus blitoides S.Watson | 515 images |
| Amaranthus blitum L. | 2301 images |
| Amaranthus californicus (Moq.) S.Watson | 12 images |
| Amaranthus hybridus L. | 1432 images |
| Amaranthus hypochondriacus L. | 1221 images |
| Amaranthus powellii S.Watson | 87 images |
| Amaranthus retroflexus L. | 8402 images |
| Amaranthus spinosus L. | 1336 images |
| Amberboa moschata (L.) DC. | 7 images |
| Ambrosia acanthicarpa Hook. | 63 images |
| Ambrosia artemisiifolia L. | 4904 images |
| Ambrosia chamissonis Greene | 134 images |
| Ambrosia psilostachya DC. | 370 images |
| Ambrosia trifida L. | 1034 images |
| Amelanchier alnifolia (Nutt.) Nutt. ex M.Roem. | 722 images |
| Amelanchier cusickii Fernald | 7 images |
| Ammannia coccinea Rottb. | 48 images |
| Ammannia robusta Heer & Regel | 5 images |
| Amphicarpaea bracteata (L.) Fernald | 434 images |
| Amsinckia menziesii (Lehm.) A.Nelson & J.F.Macbr. | 224 images |
| Anaphalis margaritacea (L.) Benth. & Hook.f. | 1309 images |
| Anchusa arvensis (L.) M.Bieb. | 2784 images |
| Anchusa azurea Mill. | 3269 images |
| Anchusa officinalis L. | 5020 images |
| Andromeda polifolia L. | 603 images |
| Andropogon gerardi Vitman | 183 images |
| Androsace laevigata (A.Gray) Wendelbo | 2 images |
| Androsace montana (A.Gray) Wendelbo | 1 images |
| Androsace occidentalis Pursh | 5 images |
| Androsace septentrionalis L. | 179 images |
| Anemonastrum canadense (L.) Mosyakin | 991 images |
| Anemone cylindrica A.Gray | 14 images |
| Anemone lithophila Rydb. | 1 images |
| Anemone multifida Poir. | 111 images |
| Anemone parviflora Michx. | 15 images |
| Anemone virginiana L. | 364 images |
| Anemonoides quinquefolia (L.) Holub | 1297 images |
| Anethum graveolens L. | 2621 images |
| Angelica arguta Nutt. | 6 images |
| Angelica lucida L. | 47 images |
| Angelica pinnata S.Watson | 2 images |
| Anisocarpus madioides Nutt. | 16 images |
| Antennaria alpina (L.) Gaertn. | 29 images |
| Antennaria howellii Greene | 21 images |
| Antennaria lanata Greene | 10 images |
| Antennaria media Greene | 9 images |
| Antennaria microphylla Rydb. | 5 images |
| Antennaria monocephala DC. | 2 images |
| Antennaria neglecta Greene | 194 images |
| Antennaria parlinii Fernald | 24 images |
| Antennaria parvifolia Nutt. | 92 images |
| Antennaria plantaginifolia (L.) Hook. | 206 images |
| Antennaria rosea Greene | 5 images |
| Antennaria umbrinella Rydb. | 2 images |
| Anthemis arvensis L. | 4150 images |
| Anthemis cotula L. | 1612 images |
| Anthoxanthum aristatum Boiss. | 56 images |
| Anthoxanthum nitens (Weber) Y.Schouten & Veldkamp | 77 images |
| Anthoxanthum odoratum L. | 2401 images |
| Anthriscus caucalis M.Bieb. | 1811 images |
| Anthriscus cerefolium (L.) Hoffm. | 3215 images |
| Anthriscus sylvestris (L.) Hoffm. | 19964 images |
| Anticlea elegans (Pursh) Rydb. | 44 images |
| Antirrhinum majus L. | 15121 images |
| Apera interrupta (L.) P.Beauv. | 31 images |
| Apocynum androsaemifolium L. | 1035 images |
| Apocynum cannabinum L. | 984 images |
| Aquilegia brevistyla Hook. | 1 images |
| Aquilegia canadensis L. | 2023 images |
| Aquilegia flavescens S.Watson | 18 images |
| Aquilegia formosa Fisch. ex DC. | 68 images |
| Aquilegia jonesii Parry | 2 images |
| Aquilegia vulgaris L. | 20839 images |
| Arabidopsis lyrata (L.) O'Kane & Al-Shehbaz | 2 images |
| Arabidopsis thaliana (L.) Heynh. | 2151 images |
| Arabis caucasica Willd. | 767 images |
| Arabis hirsuta (L.) Scop. | 1558 images |
| Aralia hispida Vent. | 75 images |
| Aralia nudicaulis L. | 862 images |
| Arbutus menziesii Pursh | 787 images |
| Arceuthobium campylopodum Engelm. | 33 images |
| Arceuthobium douglasii Engelm. | 4 images |
| Arctium lappa L. | 10345 images |
| Arctium minus (Hill) Bernh. | 11539 images |
| Arctium tomentosum Mill. | 2020 images |
| Arctostaphylos × media Greene | 3 images |
| Arctostaphylos columbiana Piper | 25 images |
| Arctostaphylos uva-ursi (L.) Spreng. | 2073 images |
| Arctous alpina (L.) Nied. | 283 images |
| Arenaria serpyllifolia L. | 1474 images |
| Arethusa bulbosa L. | 42 images |
| Argentina anserina (L.) Rydb. | 5099 images |
| Arisaema triphyllum (L.) Schott | 2122 images |
| Armeria maritima (Mill.) Willd. | 5907 images |
| Armoracia rusticana G.Gaertn., B.Mey. & Scherb. | 288 images |
| Arnica angustifolia Vahl | 2 images |
| Arnica chamissonis Less. | 90 images |
| Arnica cordifolia Hook. | 216 images |
| Arnica fulgens Pursh | 5 images |
| Arnica gracilis Rydb. | 1 images |
| Arnica lanceolata Nutt. | 22 images |
| Arnica latifolia Bong. | 32 images |
| Arnica lonchophylla Greene | 7 images |
| Arnica mollis Hook. | 20 images |
| Arnica rydbergii Greene | 3 images |
| Arnica sororia Greene | 3 images |
| Arrhenatherum elatius (L.) P.Beauv. ex J.Presl & C.Presl | 2297 images |
| Artemisia abrotanum L. | 1408 images |
| Artemisia absinthium L. | 4994 images |
| Artemisia biennis Willd. | 141 images |
| Artemisia campestris L. | 1719 images |
| Artemisia cana Pursh | 31 images |
| Artemisia dracunculus L. | 2376 images |
| Artemisia frigida Willd. | 120 images |
| Artemisia ludoviciana Nutt. | 1186 images |
| Artemisia michauxiana Besser | 8 images |
| Artemisia pontica L. | 78 images |
| Artemisia suksdorfii Piper | 50 images |
| Artemisia tilesii Ledeb. | 7 images |
| Artemisia tridentata Nutt. | 344 images |
| Artemisia vulgaris L. | 17172 images |
| Aruncus dioicus (Walter) Fernald | 4899 images |
| Asarum canadense L. | 625 images |
| Asarum caudatum Lindl. | 179 images |
| Asclepias incarnata L. | 1143 images |
| Asclepias lanuginosa Nutt. | 5 images |
| Asclepias ovalifolia Decne. | 8 images |
| Asclepias speciosa Torr. | 723 images |
| Asclepias syriaca L. | 3833 images |
| Asclepias verticillata L. | 188 images |
| Asclepias viridiflora Raf. | 213 images |
| Asparagus officinalis L. | 3174 images |
| Asperugo procumbens L. | 450 images |
| Asplenium adulterinum Milde | 21 images |
| Asplenium trichomanes L. | 6067 images |
| Asplenium viride Huds. | 575 images |
| Aster alpinus L. | 3295 images |
| Astragalus alpinus L. | 357 images |
| Astragalus canadensis L. | 45 images |
| Astragalus crassicarpus Nutt. | 69 images |
| Astragalus lotiflorus Hook. | 8 images |
| Astragalus missouriensis Nutt. | 42 images |
| Astragalus purshii Douglas ex G.Don | 10 images |
| Astragalus racemosus Pursh | 24 images |
| Athysanus pusillus (Hook.) Greene | 1 images |
| Atocion armeria (L.) Raf. | 2901 images |
| Atriplex argentea Nutt. | 3 images |
| Atriplex canescens (Pursh) Nutt. | 160 images |
| Atriplex glabriuscula Edmondston | 87 images |
| Atriplex hortensis L. | 1091 images |
| Atriplex micrantha Ledeb. | 66 images |
| Atriplex oblongifolia Waldst. & Kit. | 17 images |
| Atriplex patula L. | 714 images |
| Atriplex prostrata Boucher ex DC. | 1342 images |
| Atriplex rosea L. | 39 images |
| Avena fatua L. | 2720 images |
| Avena sativa L. | 3794 images |
| Avenella flexuosa (L.) Drejer | 476 images |
| Avenula pubescens (Huds.) Dumort. | 131 images |
| Azolla caroliniana Willd. | 14 images |
| Azolla filiculoides Lam. | 362 images |
| Bacopa rotundifolia (Michx.) Wettst. | 6 images |
| Balsamorhiza deltoidea Nutt. | 6 images |
| Barbarea orthoceras Ledeb. | 554 images |
| Barbarea verna (Mill.) Asch. | 1537 images |
| Barbarea vulgaris W.T.Aiton | 1216 images |
| Bassia hyssopifolia (Pall.) Kuntze | 36 images |
| Bassia scoparia (L.) A.J.Scott | 434 images |
| Beckmannia syzigachne (Steud.) Fernald | 16 images |
| Bellis perennis L. | 14649 images |
| Berberis aquifolium Pursh | 16458 images |
| Berberis nervosa Pursh | 18 images |
| Berberis repens Lindl. | 1751 images |
| Berberis vulgaris L. | 5364 images |
| Berteroa incana (L.) DC. | 4986 images |
| Berula erecta (Huds.) Coville | 805 images |
| Betula × caerulea Blanch. | 3 images |
| Betula glandulosa Michx. | 10 images |
| Betula occidentalis Hook. | 42 images |
| Betula papyrifera Marshall | 482 images |
| Betula pendula Roth | 11215 images |
| Betula pubescens Ehrh. | 5609 images |
| Betula pumila L. | 10 images |
| Bidens cernua L. | 472 images |
| Bidens frondosa L. | 2820 images |
| Bidens tripartita L. | 1120 images |
| Bidens vulgata Greene | 68 images |
| Bistorta bistortoides (Pursh) Small | 1 images |
| Bistorta vivipara (L.) Delarbre | 1213 images |
| Blechnum spicant (L.) Roth | 1878 images |
| Blitum bonus-henricus (L.) Rchb. | 1500 images |
| Blitum capitatum L. | 207 images |
| Blitum virgatum L. | 128 images |
| Boechera drummondii (A.Gray) Á.Löve & D.Löve | 3 images |
| Bolboschoenus fluviatilis (Torr.) Soják | 3 images |
| Bolboschoenus maritimus (L.) Palla | 754 images |
| Boltonia asteroides L'Hér. | 3 images |
| Borago officinalis L. | 19676 images |
| Botrychium lanceolatum (S.G.Gmel.) Ångstr. | 6 images |
| Botrychium lunaria (L.) Sw. | 509 images |
| Botrychium multifidum (S.G.Gmel.) Rupr. | 2 images |
| Botrychium simplex E.Hitchc. | 48 images |
| Botrychium virginianum (L.) Sw. | 221 images |
| Bouteloua curtipendula (Michx.) Torr. | 114 images |
| Bouteloua dactyloides (Nutt.) Columbus | 2 images |
| Bouteloua gracilis (Kunth) Lag. ex Griffiths | 53 images |
| Boykinia occidentalis Torr. & A.Gray | 6 images |
| Brasenia schreberi J.F.Gmel. | 4 images |
| Brassica juncea (L.) Czern. | 1421 images |
| Brassica napus L. | 9726 images |
| Brassica rapa L. | 3892 images |
| Brewerimitella breweri (A.Gray) R.A.Folk & Y.Okuyama | 39 images |
| Brewerimitella ovalis (Greene) R.A.Folk & Y.Okuyama | 8 images |
| Brickellia oblongifolia Nutt. | 3 images |
| Briza maxima L. | 2035 images |
| Briza minor L. | 338 images |
| Brodiaea coronaria (Salisb.) Jeps. | 17 images |
| Bromus arvensis L. | 147 images |
| Bromus carinatus Hook. & Arn. | 29 images |
| Bromus catharticus Vahl | 417 images |
| Bromus commutatus Schrad. | 103 images |
| Bromus diandrus Roth | 1366 images |
| Bromus erectus Huds. | 1107 images |
| Bromus hordeaceus L. | 3034 images |
| Bromus inermis Leyss. | 755 images |
| Bromus kalmii A.Gray | 1 images |
| Bromus lanceolatus Roth | 76 images |
| Bromus latiglumis (Shear) Hitchc. | 2 images |
| Bromus marginatus Nees ex Steud. | 1 images |
| Bromus pubescens Muhl. ex Willd. | 5 images |
| Bromus racemosus L. | 191 images |
| Bromus rigidus Roth | 14 images |
| Bromus secalinus L. | 237 images |
| Bromus sitchensis Trin. | 9 images |
| Bromus squarrosus L. | 118 images |
| Bromus sterilis L. | 2867 images |
| Bromus tectorum L. | 442 images |
| Bromus vulgaris (Hook.) Shear | 1 images |
| Buddleja davidii Franch. | 16839 images |
| Buglossoides arvensis (L.) I.M.Johnst. | 1172 images |
| Bunias orientalis L. | 2541 images |
| Bupleurum americanum J.M.Coult. & Rose | 1 images |
| Butomus umbellatus L. | 1615 images |
| Cacaliopsis nardosmia (A.Gray) A.Gray | 11 images |
| Cakile edentula (Bigelow) Hook. | 237 images |
| Cakile maritima Scop. | 6135 images |
| Calamagrostis arenaria (L.) Roth | 1637 images |
| Calamagrostis breviligulata (Fernald) Saarela | 49 images |
| Calamagrostis canadensis (Michx.) P.Beauv. | 3 images |
| Calamagrostis epigejos (L.) Roth | 2912 images |
| Calamagrostis purpurea (Trin.) Trin. | 23 images |
| Calamagrostis sesquiflora (Trin.) Tzvelev | 4 images |
| Calamagrostis stricta (Timm) Koeler | 27 images |
| Calandrinia ciliata (Ruiz & Pav.) DC. | 33 images |
| Calendula officinalis L. | 15515 images |
| Calla palustris L. | 1411 images |
| Callitriche hamulata Kütz. ex W.D.J.Koch | 11 images |
| Callitriche hermaphroditica L. | 7 images |
| Callitriche heterophylla Pursh | 3 images |
| Callitriche marginata Torr. | 8 images |
| Callitriche palustris L. | 384 images |
| Callitriche stagnalis Scop. | 656 images |
| Callitropsis nootkatensis (D.Don) Oerst. | 520 images |
| Calluna vulgaris (L.) Hull | 8653 images |
| Calochortus apiculatus Baker | 27 images |
| Calochortus lyallii Baker | 14 images |
| Calochortus macrocarpus Douglas | 73 images |
| Calopogon tuberosus (L.) Britton, Sterns & Poggenb. | 74 images |
| Caltha leptosepala DC. | 145 images |
| Caltha palustris L. | 10801 images |
| Calypso bulbosa (L.) Oakes | 443 images |
| Calyptridium umbellatum (Torr.) Greene | 93 images |
| Calystegia sepium (L.) R.Br. | 9681 images |
| Calystegia silvatica (Kit.) Griseb. | 1777 images |
| Calystegia soldanella (L.) R.Br. | 1895 images |
| Camassia leichtlinii (Baker) S.Watson | 778 images |
| Camassia quamash (Pursh) Greene | 808 images |
| Camelina alyssum (Mill.) Thell. | 3 images |
| Camelina microcarpa Andrz. ex DC. | 110 images |
| Camelina sativa (L.) Crantz | 222 images |
| Campanula lactiflora M.Bieb. | 454 images |
| Campanula lasiocarpa Cham. | 14 images |
| Campanula medium L. | 2959 images |
| Campanula persicifolia L. | 10285 images |
| Campanula rapunculoides L. | 5250 images |
| Campanula trachelium L. | 9577 images |
| Capnoides sempervirens (L.) Borkh. | 112 images |
| Capsella bursa-pastoris (L.) Medik. | 10010 images |
| Cardamine angulata Hook. | 8 images |
| Cardamine bellidifolia L. | 27 images |
| Cardamine bulbosa (Schreb. ex Muhl.) Britton, Sterns & Poggenb. | 26 images |
| Cardamine flexuosa With. | 5396 images |
| Cardamine hirsuta L. | 4059 images |
| Cardamine nuttallii Greene | 56 images |
| Cardamine oligosperma Nutt. | 53 images |
| Cardamine parviflora L. | 1923 images |
| Cardamine pensylvanica Muhl. ex Willd. | 5 images |
| Cardamine polemonioides Rouy | 1 images |
| Cardamine pratensis L. | 17135 images |
| Carduus acanthoides L. | 3585 images |
| Carduus crispus L. | 748 images |
| Carduus nutans L. | 4782 images |
| Carex amplifolia Boott | 1 images |
| Carex aquatilis Wahlenb. | 19 images |
| Carex arcta Boott | 6 images |
| Carex atherodes Spreng. | 5 images |
| Carex atrofusca Schkuhr | 100 images |
| Carex aurea Nutt. | 18 images |
| Carex bicolor Bellardi ex All. | 60 images |
| Carex bigelowii Torr. ex Schwein. | 23 images |
| Carex brunnescens (Pers.) Poir. | 41 images |
| Carex buxbaumii Wahlenb. | 72 images |
| Carex canescens L. | 132 images |
| Carex capillaris L. | 51 images |
| Carex capitata Sol. | 1 images |
| Carex chordorrhiza L.f. | 38 images |
| Carex comosa Boott | 41 images |
| Carex crinita Lam. | 72 images |
| Carex deweyana Schwein. | 7 images |
| Carex diandra Schrank | 81 images |
| Carex disperma Dewey | 3 images |
| Carex eburnea Boott | 27 images |
| Carex echinata Murray | 293 images |
| Carex emoryi Dewey | 8 images |
| Carex filifolia Nutt. | 8 images |
| Carex flava L. | 298 images |
| Carex garberi Fernald | 1 images |
| Carex glacialis Mack. | 53 images |
| Carex gracillima Schwein. | 24 images |
| Carex granularis Muhl. ex Willd. | 12 images |
| Carex heleonastes Ehrh. ex L.f. | 21 images |
| Carex hoodii Boott | 3 images |
| Carex hystericina Muhl. ex Willd. | 32 images |
| Carex inops L.H.Bailey | 1 images |
| Carex intumescens Rudge | 115 images |
| Carex lachenalii Schkuhr | 46 images |
| Carex lacustris Willd. | 15 images |
| Carex laeviconica Dewey | 3 images |
| Carex laeviculmis Meinsh. | 3 images |
| Carex lasiocarpa Ehrh. | 52 images |
| Carex lenticularis Michx. | 5 images |
| Carex leporina L. | 286 images |
| Carex leptopoda Mack. | 4 images |
| Carex limosa L. | 117 images |
| Carex livida (Wahlenb.) Willd. | 6 images |
| Carex luzulina Olney | 8 images |
| Carex lyngbyei Hornem. | 8 images |
| Carex macrocephala Willd. ex Spreng. | 7 images |
| Carex magellanica Lam. | 67 images |
| Carex maritima Gunnerus | 32 images |
| Carex meadii Dewey | 6 images |
| Carex mertensii J.D.Prescott ex Bong. | 5 images |
| Carex michauxiana Boeckeler | 3 images |
| Carex microglochin Wahlenb. | 77 images |
| Carex microptera Mack. | 5 images |
| Carex myosuroides Vill. | 41 images |
| Carex norvegica Retz. | 21 images |
| Carex obtusata Lilj. | 5 images |
| Carex oederi Retz. | 308 images |
| Carex oligosperma Michx. | 8 images |
| Carex paleacea Schreb. ex Wahlenb. | 8 images |
| Carex pauciflora Lightf. | 89 images |
| Carex paysonis Clokey | 4 images |
| Carex pedunculata Muhl. ex Willd. | 21 images |
| Carex pensylvanica Lam. | 93 images |
| Carex phaeocephala Piper | 1 images |
| Carex prairea Dewey ex Alph.Wood | 2 images |
| Carex praticola Rydb. | 1 images |
| Carex pseudocyperus L. | 471 images |
| Carex radiata (Wahlenb.) Small | 37 images |
| Carex rariflora (Wahlenb.) Sm. | 2 images |
| Carex raynoldsii Dewey | 1 images |
| Carex retrorsa Schwein. | 11 images |
| Carex rosea Willd. | 1 images |
| Carex rostrata Stokes | 333 images |
| Carex rupestris All. | 51 images |
| Carex sartwellii Dewey | 4 images |
| Carex scirpoidea Michx. | 2 images |
| Carex simpliciuscula Wahlenb. | 10 images |
| Carex spectabilis Dewey | 5 images |
| Carex sprengelii Dewey ex Spreng. | 7 images |
| Carex sterilis Willd. | 3 images |
| Carex stipata Muhl. ex Willd. | 62 images |
| Carex subspathacea Wormsk. ex Hornem. | 4 images |
| Carex supina Willd. ex Wahlenb. | 2 images |
| Carex tenera Dewey | 8 images |
| Carex tenuiflora Wahlenb. | 2 images |
| Carex tumulicola Mack. | 2 images |
| Carex utriculata Boott | 8 images |
| Carex vaginata Tausch | 64 images |
| Carex vallicola Dewey | 2 images |
| Carex vesicaria L. | 308 images |
| Carex vulpinoidea Michx. | 130 images |
| Carthamus tinctorius L. | 965 images |
| Carum carvi L. | 1411 images |
| Cassiope mertensiana (Bong.) G.Don | 18 images |
| Cassiope tetragona (L.) D.Don | 6 images |
| Castilleja ambigua Hook. & Arn. | 2 images |
| Castilleja attenuata (A.Gray) T.I.Chuang & Heckard | 4 images |
| Castilleja coccinea (L.) Spreng. | 105 images |
| Castilleja cusickii Greenm. | 17 images |
| Castilleja elegans Malte | 4 images |
| Castilleja hispida Benth. | 44 images |
| Castilleja levisecta Greenm. | 6 images |
| Castilleja miniata Douglas ex Benth. | 373 images |
| Castilleja minor (A.Gray) A.Gray | 38 images |
| Castilleja occidentalis Torr. | 17 images |
| Castilleja parviflora Bong. | 105 images |
| Castilleja rhexiifolia Rydb. | 11 images |
| Castilleja rupicola Piper ex Fernald | 17 images |
| Castilleja septentrionalis Lindl. | 26 images |
| Castilleja sessiliflora Pursh | 14 images |
| Castilleja thompsonii Pennell | 9 images |
| Catabrosa aquatica (L.) P.Beauv. | 73 images |
| Caulophyllum thalictroides (L.) Michx. | 462 images |
| Ceanothus herbaceus Raf. | 31 images |
| Ceanothus sanguineus Pursh | 14 images |
| Ceanothus velutinus Douglas ex Hook. | 103 images |
| Celastrus scandens L. | 973 images |
| Celtis occidentalis L. | 3798 images |
| Cenchrus longispinus (Hack.) Fernald | 80 images |
| Centaurea × gerstlaueri Erdner | 1 images |
| Centaurea cyanus L. | 17139 images |
| Centaurea diffusa Lam. | 223 images |
| Centaurea jacea L. | 14221 images |
| Centaurea melitensis L. | 812 images |
| Centaurea montana L. | 9400 images |
| Centaurea nigra L. | 8234 images |
| Centaurea nigrescens Willd. | 819 images |
| Centaurea scabiosa L. | 8628 images |
| Centaurea solstitialis L. | 1301 images |
| Centaurea stoebe L. | 843 images |
| Centaurium erythraea Rafn | 7688 images |
| Cephalanthera austiniae (A.Gray) A.Heller | 69 images |
| Cerastium alpinum L. | 1277 images |
| Cerastium beeringianum Cham. & Schltdl. | 1 images |
| Cerastium glomeratum Thuill. | 4659 images |
| Cerastium holosteoides Fr. | 10 images |
| Cerastium nutans Raf. | 9 images |
| Cerastium pumilum Curtis | 420 images |
| Cerastium semidecandrum L. | 488 images |
| Cerastium tomentosum L. | 6655 images |
| Ceratophyllum demersum L. | 325 images |
| Chaenorhinum minus (L.) Lange | 696 images |
| Chaerophyllum temulum L. | 6169 images |
| Chamaedaphne calyculata (L.) Moench | 164 images |
| Chamaerhodos erecta (L.) Bunge | 1 images |
| Chasmanthium latifolium (Michx.) H.O.Yates | 420 images |
| Chelidonium majus L. | 26492 images |
| Chelone glabra L. | 444 images |
| Chenopodiastrum murale (L.) S.Fuentes, Uotila & Borsch | 1420 images |
| Chenopodium album L. | 14799 images |
| Chenopodium berlandieri Moq. | 48 images |
| Chenopodium betaceum Andrz. | 9 images |
| Chenopodium ficifolium Sm. | 1480 images |
| Chenopodium pratericola Rydb. | 17 images |
| Cherleria obtusiloba (Rydb.) A.J.Moore & Dillenb. | 16 images |
| Chimaphila umbellata (L.) W.P.C.Barton | 134 images |
| Chondrilla juncea L. | 1981 images |
| Chorispora tenella (Pall.) DC. | 224 images |
| Chrysanthemum arcticum L. | 6 images |
| Cichorium intybus L. | 19607 images |
| Cicuta bulbifera L. | 34 images |
| Cicuta douglasii (DC.) J.M.Coult. & Rose | 1 images |
| Cicuta maculata L. | 334 images |
| Cicuta virosa L. | 524 images |
| Circaea alpina L. | 265 images |
| Circaea canadensis (L.) Hill | 29 images |
| Cirsium arvense (L.) Scop. | 16089 images |
| Cirsium brevistylum Cronquist | 66 images |
| Cirsium discolor (Muhl. ex Willd.) Spreng. | 222 images |
| Cirsium edule Nutt. | 38 images |
| Cirsium flodmanii Arthur | 9 images |
| Cirsium foliosum DC. | 26 images |
| Cirsium hookerianum Nutt. | 13 images |
| Cirsium muticum Michx. | 72 images |
| Cirsium palustre (L.) Scop. | 4215 images |
| Cirsium scariosum Nutt. | 7 images |
| Cirsium undulatum Spreng. | 125 images |
| Cirsium vulgare (Savi) Ten. | 20465 images |
| Cladanthus mixtus (L.) Chevall. | 388 images |
| Cladium mariscoides (Muhl.) Torr. | 3 images |
| Clarkia amoena (Lehm.) A.Nelson & J.F.Macbr. | 1233 images |
| Clarkia pulchella Pursh | 52 images |
| Clarkia purpurea (Curtis) A.Nelson & J.F.Macbr. | 11 images |
| Clarkia rhomboidea Douglas | 63 images |
| Claytonia lanceolata Pursh | 39 images |
| Claytonia megarhiza (A.Gray) Parry ex S.Watson | 4 images |
| Claytonia parviflora Douglas | 51 images |
| Claytonia perfoliata Donn ex Willd. | 3395 images |
| Claytonia rubra (Howell) Tidestr. | 72 images |
| Claytonia sibirica L. | 1036 images |
| Clematis ligusticifolia Nutt. | 91 images |
| Clematis occidentalis (Hornem.) DC. | 59 images |
| Clematis tangutica (Maxim.) Korsh. | 643 images |
| Clematis virginiana L. | 848 images |
| Clematis vitalba L. | 19026 images |
| Cleomella serrulata (Pursh) Roalson & J.C.Hall | 74 images |
| Clinopodium glabellum (Michx.) Kuntze | 14 images |
| Clinopodium menthifolium (Host) Merino | 41 images |
| Clinopodium vulgare L. | 7555 images |
| Clintonia borealis (Aiton) Raf. | 727 images |
| Clintonia uniflora (Menzies ex Schult. & Schult.f.) Kunth | 9 images |
| Cochlearia groenlandica L. | 15 images |
| Coleanthus subtilis (Tratt.) Seidel ex Roem. & Schult. | 64 images |
| Collinsia grandiflora Douglas ex Lindl. | 4 images |
| Collinsia parviflora Douglas ex Lindl. | 48 images |
| Collomia grandiflora Douglas ex Lindl. | 306 images |
| Collomia heterophylla Hook. | 12 images |
| Collomia linearis Nutt. | 35 images |
| Comandra umbellata (L.) Nutt. | 95 images |
| Comarum palustre L. | 1069 images |
| Comastoma tenellum (Rottb.) Toyok. | 78 images |
| Conium maculatum L. | 8068 images |
| Conopholis americana (L.) Wallr. | 335 images |
| Conringia orientalis (L.) C.Presl | 4 images |
| Convallaria majalis L. | 7558 images |
| Convolvulus arvensis L. | 17145 images |
| Coptis trifolia (L.) Salisb. | 259 images |
| Corallorhiza maculata Raf. | 317 images |
| Corallorhiza mertensiana Bong. | 115 images |
| Corallorhiza striata Lindl. | 136 images |
| Corallorhiza trifida Châtel. | 186 images |
| Coreopsis lanceolata L. | 2939 images |
| Coreopsis tinctoria Nutt. | 3173 images |
| Corispermum americanum (Nutt.) Nutt. | 2 images |
| Corispermum pallasii Steven | 103 images |
| Cornus alternifolia L.f. | 310 images |
| Cornus canadensis L. | 1422 images |
| Cornus nuttallii Audubon ex Torr. & A.Gray | 116 images |
| Cornus racemosa Lam. | 490 images |
| Cornus rugosa Lam. | 222 images |
| Cornus sericea L. | 7342 images |
| Cornus suecica L. | 644 images |
| Cornus unalaschkensis Ledeb. | 9 images |
| Corrigiola litoralis L. | 382 images |
| Corydalis aurea Willd. | 101 images |
| Corydalis scouleri Hook. | 31 images |
| Corylus americana Walter | 68 images |
| Corylus cornuta Marshall | 1363 images |
| Corynephorus canescens (L.) P.Beauv. | 399 images |
| Cota tinctoria (L.) J.Gay | 2360 images |
| Cotoneaster acutifolius Turcz. | 865 images |
| Cotoneaster bullatus Bois | 759 images |
| Cotoneaster coriaceus Franch. | 6061 images |
| Cotoneaster dammeri C.K.Schneid. | 2323 images |
| Cotoneaster dielsianus E.Pritz. | 102 images |
| Cotoneaster divaricatus Rehder & E.H.Wilson | 540 images |
| Cotoneaster franchetii Bois | 3983 images |
| Cotoneaster horizontalis Decne. | 5711 images |
| Cotoneaster rehderi Pojark. | 12 images |
| Cotoneaster salicifolius Franch. | 1664 images |
| Cotoneaster simonsii Baker | 69 images |
| Cotoneaster sternianus (Turrill) Boom | 6 images |
| Cotula coronopifolia L. | 503 images |
| Crassula aquatica (L.) Schönland | 7 images |
| Crassula connata (Ruiz & Pav.) A.Berger | 4 images |
| Crassula tillaea Lest.-Garl. | 547 images |
| Crataegus chrysocarpa Ashe | 8 images |
| Crataegus douglasii Lindl. | 418 images |
| Crataegus macracantha Lodd. ex Loudon | 7 images |
| Crataegus monogyna Jacq. | 25154 images |
| Crataegus succulenta Schrad. ex Link | 15 images |
| Crepis capillaris (L.) Wallr. | 9624 images |
| Crepis intermedia A.Gray | 3 images |
| Crepis modocensis Greene | 6 images |
| Crepis nicaeensis Balb. | 36 images |
| Crepis occidentalis Nutt. | 45 images |
| Crepis tectorum L. | 381 images |
| Crepis vesicaria L. | 3335 images |
| Crocanthemum bicknellii (Fernald) Janch. | 3 images |
| Crocidium multicaule Hook. | 19 images |
| Cryptantha minima Rydb. | 9 images |
| Cryptotaenia canadensis (L.) DC. | 257 images |
| Cuscuta approximata Bab. | 37 images |
| Cuscuta campestris Yunck. | 596 images |
| Cuscuta cephalanthi Engelm. | 3 images |
| Cuscuta epilinum Weihe | 14 images |
| Cuscuta epithymum (L.) L. | 1155 images |
| Cuscuta gronovii Willd. ex Schult. | 4 images |
| Cuscuta pentagona Engelm. | 12 images |
| Cyclachaena xanthiifolia (Nutt.) Fresen. | 103 images |
| Cymbalaria muralis G.Gaertn., B.Mey. & Scherb. | 1759 images |
| Cymopterus glomeratus (Nutt.) DC. | 2 images |
| Cynodon dactylon (L.) Pers. | 2522 images |
| Cynoglossum officinale L. | 3287 images |
| Cynosurus cristatus L. | 784 images |
| Cynosurus echinatus L. | 630 images |
| Cyperus eragrostis Lam. | 2407 images |
| Cyperus esculentus L. | 825 images |
| Cyperus squarrosus L. | 27 images |
| Cyperus strigosus L. | 292 images |
| Cyperus subsquarrosus (Muhl.) Bauters | 160 images |
| Cypripedium acaule Aiton | 913 images |
| Cypripedium candidum Muhl. ex Willd. | 44 images |
| Cypripedium montanum Douglas ex Lindl. | 100 images |
| Cypripedium parviflorum Salisb. | 309 images |
| Cypripedium passerinum Richardson | 14 images |
| Cypripedium reginae Walter | 205 images |
| Cystopteris fragilis (L.) Bernh. | 1110 images |
| Cystopteris montana (Lam.) Bernh. | 108 images |
| Cytisus scoparius (L.) Link | 11858 images |
| Dactylis glomerata L. | 10591 images |
| Dactylorhiza viridis (L.) R.M.Bateman, Pridgeon & M.W.Chase | 820 images |
| Dalea candida Willd. | 9 images |
| Dalea purpurea Vent. | 235 images |
| Dalea villosa (Nutt.) Spreng. | 3 images |
| Danthonia californica Bol. | 18 images |
| Danthonia decumbens (L.) DC. | 104 images |
| Danthonia intermedia Vasey | 2 images |
| Danthonia unispicata (Thurb.) Munro ex Macoun | 21 images |
| Daphne laureola L. | 3934 images |
| Daphne mezereum L. | 4442 images |
| Darlingtonia californica Torr. | 205 images |
| Dasiphora fruticosa (L.) Rydb. | 6447 images |
| Daucus carota L. | 25012 images |
| Daucus pusillus Michx. | 200 images |
| Delphinium ajacis L. | 6276 images |
| Delphinium bicolor Nutt. | 10 images |
| Delphinium carolinianum Walter | 156 images |
| Delphinium elatum L. | 4635 images |
| Delphinium glareosum Greene | 4 images |
| Delphinium menziesii DC. | 58 images |
| Delphinium nuttallianum Pritz. ex Walp. | 171 images |
| Deschampsia cespitosa (L.) P.Beauv. | 470 images |
| Deschampsia elongata (Hook.) Munro | 3 images |
| Descurainia pinnata (Walter) Britton | 160 images |
| Descurainia sophia (L.) Webb ex Prantl | 796 images |
| Dianthus armeria L. | 2423 images |
| Dianthus barbatus L. | 11127 images |
| Dianthus deltoides L. | 4122 images |
| Diapensia lapponica L. | 35 images |
| Dicentra formosa (Andrews) Walp. | 313 images |
| Dicentra uniflora Kellogg | 44 images |
| Dichanthelium scribnerianum (Nash) J.R.Thomas | 2 images |
| Diervilla lonicera Mill. | 620 images |
| Dieteria canescens (Pursh) Nutt. | 68 images |
| Digitalis lutea L. | 2949 images |
| Digitalis purpurea L. | 21296 images |
| Digitaria ischaemum (Schreb.) Muhl. | 49 images |
| Digitaria sanguinalis (L.) Scop. | 2190 images |
| Diplachne fusca (L.) P.Beauv. ex Roem. & Schult. | 44 images |
| Diplotaxis muralis (L.) DC. | 858 images |
| Dipsacus fullonum L. | 13591 images |
| Distichlis spicata (L.) Greene | 90 images |
| Doellingeria engelmannii (D.C.Eaton) Semple, Brouillet & G.A.Allen | 1 images |
| Doellingeria umbellata (Mill.) Nees | 443 images |
| Doronicum caucasicum M.Bieb. | 726 images |
| Doronicum pardalianches L. | 2034 images |
| Downingia elegans (Douglas ex Lindl.) Torr. | 1 images |
| Draba crassifolia Graham | 1 images |
| Draba fladnizensis Wulfen | 11 images |
| Draba glabella Pursh | 7 images |
| Draba incana L. | 28 images |
| Draba nemorosa L. | 83 images |
| Draba oligosperma Hook. | 6 images |
| Draba paysonii J.F.Macbr. | 5 images |
| Draba verna L. | 2719 images |
| Dracocephalum parviflorum Nutt. | 35 images |
| Drosera × obovata Mert. & W.D.J.Koch | 31 images |
| Drosera anglica Huds. | 293 images |
| Drosera intermedia Hayne | 416 images |
| Drosera linearis Goldie | 14 images |
| Drosera rotundifolia L. | 1502 images |
| Dryas drummondii Richardson ex Hook. | 34 images |
| Dryas integrifolia Vahl | 3 images |
| Drymocallis arguta (Pursh) Rydb. | 11 images |
| Dryopteris arguta (Kaulf.) Watt | 6 images |
| Dryopteris carthusiana (Vill.) H.P.Fuchs | 787 images |
| Dryopteris cristata (L.) A.Gray | 242 images |
| Dryopteris expansa (C.Presl) Fraser-Jenk. & Jermy | 107 images |
| Dryopteris filix-mas (L.) Schott | 6510 images |
| Dryopteris fragrans (L.) Schott | 31 images |
| Dryopteris marginalis (L.) A.Gray | 4 images |
| Dulichium arundinaceum (L.) Britton | 35 images |
| Dysphania atriplicifolia (Spreng.) G.Kadereit, Sukhor. & Uotila | 60 images |
| Dysphania botrys (L.) Mosyakin & Clemants | 112 images |
| Echinacea angustifolia DC. | 1456 images |
| Echinochloa crus-galli (L.) P.Beauv. | 2527 images |
| Echinochloa frumentacea Link | 13 images |
| Echinochloa muricata (P.Beauv.) Fernald | 42 images |
| Echinocystis lobata (Michx.) Torr. & A.Gray | 738 images |
| Echinops sphaerocephalus L. | 3039 images |
| Echium plantagineum L. | 7467 images |
| Echium vulgare L. | 34194 images |
| Elaeagnus angustifolia L. | 5067 images |
| Elaeagnus commutata Bernh. ex Rydb. | 211 images |
| Elatine triandra Schkuhr | 42 images |
| Eleocharis acicularis (L.) Roem. & Schult. | 55 images |
| Eleocharis atropurpurea (Retz.) J.Presl & C.Presl | 4 images |
| Eleocharis compressa Sull. | 16 images |
| Eleocharis erythropoda Steud. | 5 images |
| Eleocharis macrostachya Britton | 10 images |
| Eleocharis mamillata (H.Lindb.) H.Lindb. | 1 images |
| Eleocharis obtusa (Willd.) Schult. | 34 images |
| Eleocharis ovata (Roth) Roem. & Schult. | 44 images |
| Eleocharis palustris (L.) Roem. & Schult. | 651 images |
| Eleocharis parvula (Roem. & Schult.) Link ex Bluff, Nees & Schauer | 40 images |
| Eleocharis quinqueflora (Hartmann) O.Schwarz | 52 images |
| Eleocharis uniglumis (Link) Schult. | 28 images |
| Ellisia nyctelea (L.) L. | 55 images |
| Elodea canadensis Michx. | 234 images |
| Elodea nuttallii (Planch.) H.St.John | 81 images |
| Elsholtzia ciliata (Thunb.) Hyl. | 48 images |
| Elymus canadensis L. | 128 images |
| Elymus elymoides (Raf.) Swezey | 21 images |
| Elymus glaucus Buckley | 13 images |
| Elymus repens (L.) Gould | 622 images |
| Elymus sibiricus L. | 1 images |
| Elymus violaceus (Hornem.) J.Feilberg | 8 images |
| Elymus virginicus L. | 57 images |
| Empetrum nigrum L. | 1143 images |
| Epigaea repens L. | 170 images |
| Epilobium anagallidifolium Lam. | 183 images |
| Epilobium angustifolium L. | 16790 images |
| Epilobium brachycarpum C.Presl | 254 images |
| Epilobium ciliatum Raf. | 4256 images |
| Epilobium clavatum Trel. | 2 images |
| Epilobium glaberrimum Barbey | 13 images |
| Epilobium hallianum Hausskn. | 1 images |
| Epilobium hirsutum L. | 12618 images |
| Epilobium hornemannii Rchb. | 23 images |
| Epilobium lactiflorum Hausskn. | 18 images |
| Epilobium latifolium L. | 78 images |
| Epilobium leptophyllum Raf. | 8 images |
| Epilobium luteum Pursh | 26 images |
| Epilobium minutum Lindl. ex Lehm. | 13 images |
| Epilobium mirabile Trel. ex Piper | 3 images |
| Epilobium montanum L. | 3183 images |
| Epilobium obscurum Schreb. | 70 images |
| Epilobium oregonense Hausskn. | 4 images |
| Epilobium palustre L. | 387 images |
| Epilobium parviflorum Schreb. | 3813 images |
| Epipactis gigantea Douglas | 173 images |
| Epipactis helleborine (L.) Crantz | 6242 images |
| Equisetum × ferrissii Clute | 3 images |
| Equisetum × litorale Kühlew. ex Rupr. | 16 images |
| Equisetum arvense L. | 6288 images |
| Equisetum fluviatile L. | 812 images |
| Equisetum laevigatum A.Braun & Engelm. | 75 images |
| Equisetum palustre L. | 899 images |
| Equisetum pratense Ehrh. | 416 images |
| Equisetum scirpoides Michx. | 76 images |
| Equisetum sylvaticum L. | 2340 images |
| Equisetum variegatum Schleich. ex F.Weber & D.Mohr | 98 images |
| Eragrostis cilianensis (All.) Vignolo ex Janch. | 90 images |
| Eragrostis hypnoides (Lam.) Britton, Sterns & Poggenb. | 5 images |
| Eragrostis mexicana (Hornem.) Link | 27 images |
| Eragrostis minor Host | 264 images |
| Eragrostis pectinacea (Michx.) Nees | 27 images |
| Eragrostis pilosa (L.) P.Beauv. | 51 images |
| Eragrostis spectabilis (Pursh) Steud. | 166 images |
| Erechtites hieraciifolius (L.) Raf. ex DC. | 1573 images |
| Eremogone capillaris (Poir.) Fenzl | 7 images |
| Eremopyrum triticeum (Gaertn.) Nevski | 10 images |
| Erigeron annuus (L.) Desf | 415 images |
| Erigeron aureus Greene | 11 images |
| Erigeron caespitosus Nutt. | 3 images |
| Erigeron canadensis L. | 13245 images |
| Erigeron compositus Pursh | 37 images |
| Erigeron divergens Torr. & A.Gray | 9 images |
| Erigeron flagellaris A.Gray | 2 images |
| Erigeron glabellus Nutt. | 111 images |
| Erigeron grandiflorus Hook. | 1 images |
| Erigeron humilis Graham | 6 images |
| Erigeron linearis (Hook.) Piper | 34 images |
| Erigeron lonchophyllus Hook. | 13 images |
| Erigeron peregrinus Greene | 44 images |
| Erigeron philadelphicus L. | 3283 images |
| Erigeron poliospermus A.Gray | 4 images |
| Erigeron pumilus Nutt. | 74 images |
| Erigeron speciosus (Lindl.) DC. | 979 images |
| Erigeron strigosus Muhl. ex Willd. | 4555 images |
| Eriocoma nelsonii (Scribn.) Romasch. | 1 images |
| Eriogonum cernuum Nutt. | 12 images |
| Eriogonum flavum Nutt. ex Benth. | 11 images |
| Eriogonum heracleoides Nutt. | 106 images |
| Eriogonum ovalifolium Nutt. | 150 images |
| Eriogonum pyrolifolium Hook. | 46 images |
| Eriogonum strictum Benth. | 41 images |
| Eriogonum umbellatum Torr. | 410 images |
| Eriophorum angustifolium Honck. | 2279 images |
| Eriophorum scheuchzeri Hoppe | 895 images |
| Eriophorum vaginatum L. | 866 images |
| Eriophorum viridicarinatum (Engelm.) Fernald | 2 images |
| Eriophyllum lanatum (Pursh) J.Forbes | 67 images |
| Erodium cicutarium (L.) L'Hér. | 13055 images |
| Eruca vesicaria (L.) Cav. | 4042 images |
| Erucastrum gallicum (Willd.) O.E.Schulz | 315 images |
| Eryngium aquaticum L. | 16 images |
| Eryngium planum L. | 2022 images |
| Erysimum × cheiri (L.) Crantz | 6414 images |
| Erysimum asperum (Nutt.) DC. | 107 images |
| Erysimum cheiranthoides L. | 1092 images |
| Erysimum repandum L. | 54 images |
| Erysimum virgatum Roth | 115 images |
| Erythranthe floribunda (Lindl.) G.L.Nesom | 9 images |
| Erythranthe guttata (DC.) G.L.Nesom | 852 images |
| Erythranthe lewisii (Pursh) G.L.Nesom & N.S.Fraga | 41 images |
| Erythranthe moschata (Douglas ex Lindl.) G.L.Nesom | 11 images |
| Erythranthe tilingii (Regel) G.L.Nesom | 3 images |
| Erythronium grandiflorum Pursh | 156 images |
| Erythronium montanum S.Watson | 56 images |
| Erythronium oregonum Applegate | 129 images |
| Erythronium revolutum Sm. | 117 images |
| Escobaria vivipara (Nutt.) Buxb. | 90 images |
| Euonymus occidentalis Nutt. ex Torr. | 29 images |
| Eupatorium cannabinum L. | 20047 images |
| Eupatorium perfoliatum L. | 887 images |
| Euphorbia agraria M.Bieb. | 5 images |
| Euphorbia cyparissias L. | 16082 images |
| Euphorbia exigua L. | 591 images |
| Euphorbia glyptosperma Engelm. | 36 images |
| Euphorbia helioscopia L. | 8719 images |
| Euphorbia lathyris L. | 9099 images |
| Euphorbia maculata L. | 752 images |
| Euphorbia marginata Pursh | 1375 images |
| Euphorbia myrsinites L. | 2175 images |
| Euphorbia peplus L. | 6742 images |
| Euphorbia saratoi Ardoino | 1 images |
| Euphorbia serpens Kunth | 509 images |
| Euphorbia virgata Waldst. & Kit. | 27 images |
| Euphrasia nemorosa (Pers.) Wallr. | 341 images |
| Eurybia conspicua (Lindl.) G.L.Nesom | 11 images |
| Eurybia macrophylla (L.) Cass. | 1482 images |
| Eurybia sibirica (L.) G.L.Nesom | 1 images |
| Euthamia graminifolia (L.) Nutt. | 685 images |
| Euthamia occidentalis Nutt. | 42 images |
| Eutrochium maculatum (L.) E.E.Lamont | 1303 images |
| Fagopyrum esculentum Moench | 5847 images |
| Fagopyrum tataricum (L.) Gaertn. | 195 images |
| Fallopia convolvulus (L.) Á.Löve | 1440 images |
| Fallopia scandens (L.) Holub | 27 images |
| Festuca bromoides L. | 214 images |
| Festuca filiformis Pourr. | 178 images |
| Festuca idahoensis Elmer | 3 images |
| Festuca microstachys Nutt. | 18 images |
| Festuca myuros L. | 310 images |
| Festuca occidentalis Hook. | 7 images |
| Festuca octoflora Walter | 10 images |
| Festuca ovina L. | 243 images |
| Festuca rubra L. | 371 images |
| Festuca trachyphylla (Hack.) Hack. | 18 images |
| Festuca viridula Vasey | 1 images |
| Festuca viviparoidea Krajina ex Pavlick | 6 images |
| Filago arvensis L. | 191 images |
| Filago germanica (L.) Huds. | 170 images |
| Filago pyramidata L. | 546 images |
| Floerkea proserpinacoides Willd. | 46 images |
| Foeniculum vulgare Mill. | 11137 images |
| Fragaria × ananassa (Duchesne ex Weston) Duchesne ex Rozier | 4224 images |
| Fragaria chiloensis (L.) Mill. | 354 images |
| Fragaria vesca L. | 11747 images |
| Fragaria virginiana Mill. | 391 images |
| Frangula alnus Mill. | 5950 images |
| Frangula purshiana (DC.) A.Gray ex J.G.Cooper | 16 images |
| Frasera albicaulis Griseb. | 6 images |
| Fraxinus latifolia Benth. | 215 images |
| Fraxinus pennsylvanica Marshall | 1085 images |
| Fritillaria affinis (Schult. & Schult.f.) Sealy | 18 images |
| Fritillaria camschatcensis (L.) Ker Gawl. | 43 images |
| Fritillaria pudica (Pursh) Spreng. | 55 images |
| Fumaria officinalis L. | 7684 images |
| Gagea serotina (L.) Ker Gawl. | 120 images |
| Gaillardia aristata Pursh | 2751 images |
| Galearis rotundifolia (Banks ex Pursh) R.M.Bateman | 5 images |
| Galeopsis bifida Boenn. | 507 images |
| Galeopsis ladanum L. | 658 images |
| Galeopsis speciosa Mill. | 1274 images |
| Galeopsis tetrahit L. | 8856 images |
| Galinsoga parviflora Cav. | 3272 images |
| Galinsoga quadriradiata Ruiz & Pav. | 3950 images |
| Galium aparine L. | 13266 images |
| Galium boreale L. | 1019 images |
| Galium kamtschaticum Steller ex Schult. & Schult.f. | 3 images |
| Galium labradoricum (Wiegand) Wiegand | 1 images |
| Galium mexicanum Kunth | 3 images |
| Galium oreganum Britton | 4 images |
| Galium palustre L. | 1724 images |
| Galium spurium L. | 31 images |
| Galium trifidum L. | 36 images |
| Galium triflorum Michx. | 218 images |
| Gaultheria hispidula (L.) Muhl. ex Bigelow | 67 images |
| Gaultheria humifusa (Graham) Rydb. | 25 images |
| Gaultheria procumbens L. | 1258 images |
| Gaultheria shallon Pursh | 931 images |
| Gaylussacia baccata (Wangenh.) K.Koch | 39 images |
| Gentiana affinis Griseb. | 35 images |
| Gentiana alba Muhl. ex J.McNab | 8 images |
| Gentiana algida Pall. | 21 images |
| Gentiana andrewsii Griseb. | 141 images |
| Gentiana calycosa Griseb. | 136 images |
| Gentiana douglasiana Bong. | 14 images |
| Gentiana fremontii Torr. | 5 images |
| Gentiana glauca Pall. | 5 images |
| Gentiana linearis Froel. | 72 images |
| Gentiana prostrata Haenke | 9 images |
| Gentiana puberulenta J.S.Pringle | 2 images |
| Gentiana sceptrum Griseb. | 3 images |
| Gentianella amarella (L.) Börner | 143 images |
| Gentianopsis crinita (Froel.) Ma | 58 images |
| Gentianopsis detonsa (Rottb.) Ma | 5 images |
| Gentianopsis virgata (Raf.) Holub | 14 images |
| Geocaulon lividum (Richardson) Fernald | 2 images |
| Geranium bicknellii Britton | 34 images |
| Geranium carolinianum L. | 1302 images |
| Geranium dissectum L. | 6245 images |
| Geranium erianthum DC. | 41 images |
| Geranium maculatum L. | 1452 images |
| Geranium molle L. | 8851 images |
| Geranium oreganum Howell | 14 images |
| Geranium pratense L. | 8330 images |
| Geranium pusillum L. | 8909 images |
| Geranium richardsonii Fisch. & Trautv. | 21 images |
| Geranium robertianum L. | 23403 images |
| Geranium viscosissimum Fisch. & C.A.Mey. | 97 images |
| Geum aleppicum Jacq. | 262 images |
| Geum canadense Jacq. | 107 images |
| Geum macrophyllum Willd. | 3626 images |
| Geum rivale L. | 3883 images |
| Geum rossii (R.Br.) Ser. | 28 images |
| Geum triflorum Pursh | 108 images |
| Gilia capitata Sims | 529 images |
| Gilia sinuata Douglas ex Benth. | 23 images |
| Githopsis specularioides Nutt. | 3 images |
| Glehnia littoralis (A.Gray) F.Schmidt ex Miq. | 1 images |
| Glyceria canadensis (Michx.) Trin. | 11 images |
| Glyceria declinata Bréb. | 29 images |
| Glyceria leptostachya Buckley | 4 images |
| Glyceria maxima (Hartm.) Holmb. | 385 images |
| Glyceria striata (Lam.) Hitchc. | 39 images |
| Glycyrrhiza lepidota Pursh | 80 images |
| Gnaphalium palustre Nutt. | 35 images |
| Gnaphalium uliginosum L. | 1101 images |
| Goodyera oblongifolia Raf. | 196 images |
| Goodyera repens (L.) R.Br. | 323 images |
| Goodyera tesselata G.Lodd. | 25 images |
| Gratiola neglecta Torr. | 18 images |
| Grindelia hirsutula Hook. & Arn. | 112 images |
| Grindelia integrifolia DC. | 97 images |
| Grindelia squarrosa (Pursh) Dunal | 299 images |
| Gunnera tinctoria (Molina) Mirb. | 3003 images |
| Gutierrezia sarothrae (Pursh) Britton & Rusby | 70 images |
| Gymnocarpium disjunctum (Rupr.) Ching | 3 images |
| Gymnocarpium dryopteris (L.) Newman | 694 images |
| Gymnocarpium robertianum (Hoffm.) Newman | 267 images |
| Gypsophila acutifolia Steven ex Spreng. | 9 images |
| Gypsophila elegans M.Bieb. | 1227 images |
| Gypsophila paniculata L. | 1323 images |
| Gypsophila scorzonerifolia Ser. | 3 images |
| Gypsophila vaccaria (L.) Sm. | 1504 images |
| Hackelia deflexa (Wahlenb.) Opiz | 19 images |
| Hackelia floribunda (Lehm.) I.M.Johnst. | 19 images |
| Halerpestes cymbalaria (Pursh) Greene | 11 images |
| Hammarbya paludosa (L.) Kuntze | 31 images |
| Hedeoma hispida Pursh | 3 images |
| Hedysarum alpinum L. | 8 images |
| Hedysarum occidentale Greene | 2 images |
| Helenium autumnale L. | 1443 images |
| Helianthus annuus L. | 15551 images |
| Helianthus maximiliani Schrad. | 493 images |
| Helianthus nuttallii Torr. & A.Gray | 12 images |
| Helianthus pauciflorus Nutt. | 180 images |
| Helianthus petiolaris Nutt. | 619 images |
| Helianthus tuberosus L. | 7801 images |
| Heliopsis helianthoides (L.) Sweet | 2352 images |
| Heliotropium curassavicum L. | 666 images |
| Helminthotheca echioides (L.) Holub | 7575 images |
| Hemieva ranunculifolia Raf. | 2 images |
| Hemionitis densa (Brack.) Christenh. | 58 images |
| Hemionitis feei (T.Moore) Christenh. | 2 images |
| Hemionitis triangularis (Kaulf.) Christenh. | 1 images |
| Hemitomes congestum A.Gray | 31 images |
| Hemizonella minima A.Gray | 22 images |
| Hepatica americana (DC.) Ker Gawl. | 5 images |
| Heracleum mantegazzianum Sommier & Levier | 2884 images |
| Heracleum maximum W.Bartram | 710 images |
| Hesperis matronalis L. | 8523 images |
| Hesperochiron pumilus (Griseb.) Porter | 11 images |
| Heteranthera dubia (Jacq.) MacMill. | 24 images |
| Heterotheca villosa (Pursh) Shinners | 162 images |
| Heuchera chlorantha Piper | 2 images |
| Heuchera cylindrica Douglas | 24 images |
| Heuchera micrantha Douglas | 1 images |
| Heuchera parvifolia Nutt. | 5 images |
| Heuchera richardsonii R.Br. | 48 images |
| Hibiscus trionum L. | 1070 images |
| Hieracium albiflorum Hook. | 189 images |
| Hieracium lachenalii Suter | 552 images |
| Hieracium murorum L. | 3929 images |
| Hieracium sabaudum L. | 833 images |
| Hieracium scouleri Hook. | 16 images |
| Hieracium triste Willd. ex Spreng. | 17 images |
| Hieracium umbellatum L. | 2027 images |
| Hippophae rhamnoides L. | 3899 images |
| Hippuris vulgaris L. | 501 images |
| Holcus lanatus L. | 6206 images |
| Holcus mollis L. | 193 images |
| Holodiscus discolor (Pursh) Maxim. | 696 images |
| Holosteum umbellatum L. | 146 images |
| Honckenya peploides (L.) Ehrh. | 1265 images |
| Hordeum brachyantherum Nevski | 20 images |
| Hordeum jubatum L. | 518 images |
| Hordeum marinum Huds. | 296 images |
| Hordeum murinum L. | 7282 images |
| Hordeum pusillum Nutt. | 55 images |
| Hordeum vulgare L. | 8778 images |
| Hornungia procumbens (L.) Hayek | 98 images |
| Hosackia gracilis Benth. | 15 images |
| Houstonia longifolia Gaertn. | 44 images |
| Hudsonia tomentosa Nutt. | 17 images |
| Humulus lupulus L. | 9771 images |
| Huperzia selago (L.) Bernh. ex Schrank & Mart. | 411 images |
| Hyacinthoides hispanica (Mill.) Rothm. | 4979 images |
| Hyacinthoides non-scripta (L.) Chouard ex Rothm. | 10488 images |
| Hydrophyllum capitatum Douglas ex Benth. | 112 images |
| Hydrophyllum fendleri (A.Gray) A.Heller | 19 images |
| Hydrophyllum tenuipes A.Heller | 15 images |
| Hydrophyllum virginianum L. | 843 images |
| Hylotelephium telephium (L.) H.Ohba | 8073 images |
| Hymenopappus filifolius Hook. | 55 images |
| Hymenoxys richardsonii (Hook.) Cockerell | 6 images |
| Hypericum fraseri (Spach) Steud. | 32 images |
| Hypericum maculatum Crantz | 4112 images |
| Hypericum majus (A.Gray) Britton | 6 images |
| Hypericum mutilum L. | 116 images |
| Hypericum perforatum L. | 17130 images |
| Hypericum scouleri Hook. | 43 images |
| Hypochaeris glabra L. | 2704 images |
| Hypoxis hirsuta (L.) Coville | 300 images |
| Ilex aquifolium L. | 15967 images |
| Iliamna rivularis (Douglas) Greene | 24 images |
| Impatiens aurella Rydb. | 5 images |
| Impatiens capensis Meerb. | 2277 images |
| Impatiens glandulifera Royle | 14147 images |
| Impatiens noli-tangere L. | 2368 images |
| Impatiens parviflora DC. | 6623 images |
| Inula helenium L. | 2673 images |
| Ionactis stenomeres (A.Gray) Greene | 8 images |
| Ipomoea purpurea (L.) Roth | 7611 images |
| Ipomopsis aggregata (Pursh) V.E.Grant | 1 images |
| Iris missouriensis Nutt. | 114 images |
| Iris pseudacorus L. | 10206 images |
| Iris setosa Pall. ex Link | 45 images |
| Iris sibirica L. | 2549 images |
| Iris versicolor L. | 918 images |
| Isatis tinctoria L. | 3905 images |
| Isoetes lacustris L. | 27 images |
| Isolepis cernua (Vahl) Roem. & Schult. | 106 images |
| Isolepis setacea (L.) R.Br. | 77 images |
| Iva axillaris Pursh | 6 images |
| Jacobaea pseudoarnica (Less.) Zuev | 11 images |
| Jacobaea vulgaris Gaertn. | 19017 images |
| Jaumea carnosa A.Gray | 23 images |
| Juncus alpinoarticulatus Chaix | 135 images |
| Juncus arcticus Willd. | 42 images |
| Juncus articulatus L. | 711 images |
| Juncus balticus Willd. | 30 images |
| Juncus biglumis L. | 10 images |
| Juncus bolanderi Engelm. | 2 images |
| Juncus bufonius L. | 496 images |
| Juncus bulbosus L. | 202 images |
| Juncus canadensis J.Gay ex Laharpe | 2 images |
| Juncus castaneus Sm. | 16 images |
| Juncus compressus Jacq. | 192 images |
| Juncus conglomeratus L. | 794 images |
| Juncus covillei Piper | 2 images |
| Juncus dudleyi Wiegand | 8 images |
| Juncus effusus L. | 3647 images |
| Juncus ensifolius Wikstr. | 90 images |
| Juncus filiformis L. | 107 images |
| Juncus gerardi Loisel. | 110 images |
| Juncus interior Wiegand | 3 images |
| Juncus mertensianus Bong. | 8 images |
| Juncus nodosus L. | 3 images |
| Juncus occidentalis Wiegand | 3 images |
| Juncus parryi Engelm. | 1 images |
| Juncus stygius L. | 10 images |
| Juncus tenuis Willd. | 606 images |
| Juncus torreyi Coville | 27 images |
| Juncus triglumis L. | 91 images |
| Juniperus communis L. | 8591 images |
| Juniperus horizontalis Moench | 1879 images |
| Juniperus scopulorum Sarg. | 532 images |
| Kalmia microphylla (Hook.) A.Heller | 12 images |
| Kalmia polifolia Wangenh. | 121 images |
| Kalmia procumbens (L.) Gift, Kron & P.F.Stevens ex Galasso, Banfi & F.Conti | 428 images |
| Kickxia elatine (L.) Dumort. | 321 images |
| Kickxia spuria (L.) Dumort. | 761 images |
| Knautia arvensis (L.) Coult. | 15819 images |
| Koeleria macrantha (Ledeb.) Schult. | 140 images |
| Koeleria spicata (L.) Barberá, Quintanar, Soreng & P.M.Peterson | 87 images |
| Koenigia islandica L. | 4 images |
| Koenigia polystachya (Wall. ex Meisn.) T.M.Schust. & Reveal | 259 images |
| Kopsiopsis hookeri (Walp.) Govaerts | 4 images |
| Krigia biflora (Walter) S.F.Blake | 59 images |
| Krigia virginica (L.) Willd. | 80 images |
| Lactuca biennis (Moench) Fernald | 138 images |
| Lactuca canadensis L. | 426 images |
| Lactuca floridana (L.) Gaertn. | 603 images |
| Lactuca muralis (L.) E.Mey. | 551 images |
| Lactuca serriola L. | 12907 images |
| Lagurus ovatus L. | 3568 images |
| Lamium album L. | 8212 images |
| Lamium amplexicaule L. | 5209 images |
| Lamium hybridum Vill. | 8102 images |
| Lamium purpureum L. | 16297 images |
| Laportea canadensis (L.) Wedd. | 281 images |
| Lappula occidentalis (S.Watson) Greene | 4 images |
| Lappula squarrosa (Retz.) Dumort. | 238 images |
| Lapsana communis L. | 14629 images |
| Larix laricina (Du Roi) K.Koch | 223 images |
| Larix lyallii Parl. | 33 images |
| Larix occidentalis Nutt. | 151 images |
| Lasthenia glaberrima DC. | 9 images |
| Lathyrus japonicus Willd. | 629 images |
| Lathyrus lanszwertii Kellogg | 15 images |
| Lathyrus latifolius L. | 10173 images |
| Lathyrus nevadensis S.Watson | 8 images |
| Lathyrus ochroleucus Hook. | 32 images |
| Lathyrus venosus Muhl. ex Willd. | 15 images |
| Lathyrus vestitus Nutt. | 3 images |
| Leersia oryzoides (L.) Sw. | 263 images |
| Lemna minor L. | 945 images |
| Lemna trisulca L. | 109 images |
| Lemna turionifera Landolt | 21 images |
| Leontodon saxatilis Lam. | 1239 images |
| Leonurus cardiaca L. | 3655 images |
| Leonurus japonicus Houtt. | 27 images |
| Lepidium campestre (L.) W.T.Aiton | 24 images |
| Lepidium densiflorum Schrad. | 62 images |
| Lepidium didymum L. | 1503 images |
| Lepidium draba L. | 8159 images |
| Lepidium heterophyllum Benth. | 312 images |
| Lepidium latifolium L. | 820 images |
| Lepidium perfoliatum L. | 40 images |
| Lepidium ruderale L. | 246 images |
| Lepidium sativum L. | 892 images |
| Lepidium virginicum L. | 1838 images |
| Leptarrhena pyrolifolia (D.Don) Ser. | 14 images |
| Leucanthemum vulgare Lam. | 10895 images |
| Leuzea repens (L.) D.J.N.Hind | 28 images |
| Levisticum officinale W.D.J.Koch | 1673 images |
| Lewisia columbiana (Howell ex A.Gray) B.L.Rob. | 3 images |
| Lewisia pygmaea (A.Gray) B.L.Rob. | 25 images |
| Lewisia rediviva Pursh | 153 images |
| Lewisiopsis tweedyi (A.Gray) Govaerts | 4 images |
| Leymus cinereus (Scribn. & Merr.) Á.Löve | 3 images |
| Leymus condensatus (J.Presl) Á.Löve | 2 images |
| Leymus innovatus (Beal) Pilg. | 1 images |
| Leymus mollis (Trin.) Pilg. | 6 images |
| Leymus triticoides (Buckley) Pilg. | 19 images |
| Liatris ligulistylis (A.Nelson) K.Schum. | 1 images |
| Liatris punctata Hook. | 181 images |
| Ligusticum scothicum L. | 114 images |
| Lilaeopsis occidentalis J.M.Coult. & Rose | 8 images |
| Lilium columbianum Leichtlin | 213 images |
| Lilium philadelphicum L. | 120 images |
| Limosella aquatica L. | 58 images |
| Linaria dalmatica (L.) Mill. | 211 images |
| Linaria maroccana Hook.f. | 1735 images |
| Linaria purpurea (L.) Mill. | 3694 images |
| Linaria vulgaris Mill. | 17314 images |
| Lindernia dubia (L.) Pennell | 220 images |
| Linnaea borealis L. | 656 images |
| Linum bienne Mill. | 533 images |
| Linum catharticum L. | 728 images |
| Linum lewisii Pursh | 175 images |
| Linum perenne L. | 3027 images |
| Linum rigidum Pursh | 18 images |
| Linum sulcatum Riddell | 4 images |
| Linum usitatissimum L. | 5537 images |
| Lipandra polysperma (L.) S.Fuentes, Uotila & Borsch | 1099 images |
| Liparis loeselii (L.) Rich. | 192 images |
| Lithophragma glabrum Nutt. | 52 images |
| Lithophragma parviflorum (Hook.) Nutt. | 3 images |
| Lithophragma tenellum Nutt. | 5 images |
| Lithospermum canescens (Michx.) Lehm. | 147 images |
| Lithospermum incisum Lehm. | 135 images |
| Lithospermum officinale L. | 1629 images |
| Lithospermum ruderale Douglas ex Lehm. | 48 images |
| Lobelia dortmanna L. | 151 images |
| Lobelia kalmii L. | 54 images |
| Lobelia siphilitica L. | 1163 images |
| Lobelia spicata Lam. | 130 images |
| Lobularia maritima (L.) Desv. | 13051 images |
| Lolium arundinaceum (Schreb.) Darbysh. | 852 images |
| Lolium multiflorum Lam. | 390 images |
| Lolium perenne L. | 3276 images |
| Lolium pratense (Huds.) Darbysh. | 786 images |
| Lolium rigidum Gaudin | 209 images |
| Lolium temulentum L. | 30 images |
| Lomatium brandegeei (J.M.Coult. & Rose) J.F.Macbr. | 17 images |
| Lomatium cous (S.Watson) J.M.Coult. & Rose | 16 images |
| Lomatium dissectum (Nutt.) Mathias & Constance | 11 images |
| Lomatium foeniculaceum (Nutt.) J.M.Coult. & Rose | 6 images |
| Lomatium grayi (J.M.Coult. & Rose) J.M.Coult. & Rose | 31 images |
| Lomatium martindalei (J.M.Coult. & Rose) J.M.Coult. & Rose | 39 images |
| Lomatium nudicaule (Nutt.) J.M.Coult. & Rose | 8 images |
| Lomatium sandbergii (J.M.Coult. & Rose) J.M.Coult. & Rose | 1 images |
| Lomatium triternatum (Pursh) J.M.Coult. & Rose | 134 images |
| Lomatium utriculatum (Nutt.) J.M.Coult. & Rose | 132 images |
| Lomatogonium rotatum (L.) Fr. | 1 images |
| Lonicera caerulea L. | 1741 images |
| Lonicera ciliosa Poir. | 95 images |
| Lonicera dioica L. | 113 images |
| Lonicera etrusca Santi | 4742 images |
| Lonicera hispidula (Lindl.) F.Dietr. | 7 images |
| Lonicera involucrata (Richardson) Banks ex Spreng. | 807 images |
| Lonicera oblongifolia Hook. | 4 images |
| Lonicera tatarica L. | 5350 images |
| Lonicera utahensis S.Watson | 34 images |
| Lonicera villosa (Michx.) Schult. | 3 images |
| Ludwigia palustris (L.) Elliott | 285 images |
| Luetkea pectinata (Pursh) Kuntze | 52 images |
| Luina hypoleuca Benth. | 13 images |
| Lunaria annua L. | 20624 images |
| Lupinus arcticus S.Watson | 22 images |
| Lupinus argenteus Pursh | 110 images |
| Lupinus bicolor Lindl. | 217 images |
| Lupinus densiflorus Benth. | 37 images |
| Lupinus lepidus Douglas ex Lindl. | 9 images |
| Lupinus nootkatensis Donn ex Sims | 174 images |
| Lupinus oreganus A.Heller | 2 images |
| Lupinus polyphyllus Lindl. | 8590 images |
| Lupinus pusillus Pursh | 14 images |
| Lupinus rivularis Douglas ex Lindl. | 1 images |
| Lupinus sericeus Pursh | 50 images |
| Lupinus sulphureus Douglas | 3 images |
| Luzula acuminata Raf. | 15 images |
| Luzula multiflora (Ehrh.) Lej. | 364 images |
| Luzula parviflora (Ehrh.) Desv. | 4 images |
| Luzula spicata (L.) DC. | 64 images |
| Lycium barbarum L. | 2859 images |
| Lycopodiella inundata (L.) Holub | 148 images |
| Lycopodium alpinum L. | 201 images |
| Lycopodium annotinum L. | 950 images |
| Lycopodium clavatum L. | 703 images |
| Lycopodium complanatum L. | 223 images |
| Lycopodium dendroideum Michx. | 181 images |
| Lycopodium tristachyum Pursh | 90 images |
| Lycopus americanus Muhl. ex W.P.C.Barton | 4 images |
| Lycopus asper Greene | 11 images |
| Lycopus europaeus L. | 5695 images |
| Lycopus uniflorus Michx. | 109 images |
| Lysichiton americanus Hultén & H.St.John | 597 images |
| Lysimachia arvensis (L.) U.Manns & Anderb. | 10713 images |
| Lysimachia borealis (Raf.) U.Manns & Anderb. | 596 images |
| Lysimachia ciliata L. | 827 images |
| Lysimachia europaea (L.) U.Manns & Anderb. | 1228 images |
| Lysimachia hybrida Michx. | 1 images |
| Lysimachia lanceolata Walter | 25 images |
| Lysimachia maritima (L.) Galasso, Banfi & Soldano | 410 images |
| Lysimachia minima (L.) U.Manns & Anderb. | 18 images |
| Lysimachia nummularia L. | 4501 images |
| Lysimachia punctata L. | 9367 images |
| Lysimachia quadriflora Sims | 10 images |
| Lysimachia terrestris (L.) Britton, Sterns & Poggenb. | 13 images |
| Lysimachia thyrsiflora L. | 357 images |
| Lysimachia vulgaris L. | 8316 images |
| Lythrum hyssopifolia L. | 520 images |
| Lythrum portula (L.) D.A.Webb | 233 images |
| Lythrum salicaria L. | 23987 images |
| Machaeranthera tanacetifolia (Kunth) Nees | 119 images |
| Madia exigua (Sm.) Greene | 1 images |
| Madia glomerata Hook. | 5 images |
| Madia gracilis (Sm.) D.D.Keck & J.C.Clausen ex Applegate | 3 images |
| Madia sativa Molina | 77 images |
| Maianthemum canadense Desf. | 1041 images |
| Maianthemum dilatatum (Alph.Wood) A.Nelson & J.F.Macbr. | 33 images |
| Maianthemum racemosum (L.) Link | 1549 images |
| Maianthemum stellatum (L.) Link | 566 images |
| Maianthemum trifolium (L.) Sloboda | 24 images |
| Malaxis monophyllos (L.) Sw. | 46 images |
| Malaxis unifolia Michx. | 17 images |
| Malus domestica (Suckow) Borkh. | 7482 images |
| Malus fusca (Raf.) C.K.Schneid. | 2 images |
| Malva alcea L. | 12552 images |
| Malva moschata L. | 5197 images |
| Malva neglecta Wallr. | 5453 images |
| Malva parviflora L. | 2791 images |
| Malva pusilla Sm. | 1412 images |
| Malva sylvestris L. | 26465 images |
| Malva thuringiaca (L.) Vis. | 574 images |
| Malva verticillata L. | 232 images |
| Marah oregana (Torr. & A.Gray) Howell | 23 images |
| Marrubium vulgare L. | 4392 images |
| Matricaria chamomilla L. | 10094 images |
| Matricaria discoidea DC. | 3644 images |
| Matthiola longipetala (Vent.) DC. | 550 images |
| Meconella oregana Nutt. | 17 images |
| Melampyrum lineare Lam. | 152 images |
| Melanocalyx uniflora (L.) Morin | 2 images |
| Melica geyeri Munro ex Bol. | 4 images |
| Melica harfordii Bol. | 5 images |
| Melica subulata (Griseb.) Scribn. | 2 images |
| Melissa officinalis L. | 13729 images |
| Menispermum canadense L. | 256 images |
| Mentha × dumetorum Schult. | 1 images |
| Mentha × gracilis Sole | 12 images |
| Mentha × piperita L. | 3303 images |
| Mentha arvensis L. | 3069 images |
| Mentha canadensis L. | 13 images |
| Mentha spicata L. | 8741 images |
| Mentzelia decapetala (Sims) Urb. | 11 images |
| Mentzelia dispersa S.Watson | 2 images |
| Mentzelia laevicaulis (Douglas ex Hook.) Torr. & A.Gray | 3 images |
| Menyanthes trifoliata L. | 1868 images |
| Mertensia lanceolata (Pursh) DC. | 21 images |
| Mertensia longiflora Greene | 7 images |
| Mertensia maritima (L.) Gray | 361 images |
| Mertensia paniculata (Aiton) G.Don | 71 images |
| Micranthes ferruginea (Graham) Brouillet & Gornall | 16 images |
| Micranthes hieraciifolia (Waldst. & Kit. ex Willd.) Haw. | 1 images |
| Micranthes integrifolia (Hook.) Small | 29 images |
| Micranthes lyallii (Engl.) Small | 6 images |
| Micranthes mertensiana (Bong.) Rosend. | 20 images |
| Micranthes nidifica (Greene) Small | 5 images |
| Micranthes nivalis (L.) Small | 4 images |
| Micranthes oregana (Howell) Small | 61 images |
| Micranthes pensylvanica (L.) Haw. | 39 images |
| Micranthes rufidula Small | 2 images |
| Micranthes tenuis (Wahlenb.) Small | 2 images |
| Micranthes tolmiei (Torr. & A.Gray) Brouillet & Gornall | 7 images |
| Micranthes virginiensis (Michx.) Small | 104 images |
| Microseris bigelovii (A.Gray) Sch.Bip. | 2 images |
| Microseris borealis (Bong.) Sch.Bip. | 10 images |
| Microseris cuspidata (Pursh) Sch.Bip. | 15 images |
| Microseris nutans (Hook.) Sch.Bip. | 7 images |
| Microseris troximoides A.Gray | 12 images |
| Microsteris gracilis (Hook.) Greene | 20 images |
| Milium effusum L. | 362 images |
| Mimulus ringens L. | 447 images |
| Mirabilis albida (Walter) Heimerl | 48 images |
| Mirabilis linearis (Pursh) Heimerl | 13 images |
| Mirabilis nyctaginea (Michx.) MacMill. | 245 images |
| Misopates orontium (L.) Raf. | 1830 images |
| Mitella nuda L. | 14 images |
| Mitellastra caulescens (Nutt.) Howell | 2 images |
| Moehringia lateriflora (L.) Fenzl | 43 images |
| Moehringia macrophylla (Hook.) Fenzl | 29 images |
| Moenchia erecta (L.) G.Gaertn., B.Mey. & Scherb. | 58 images |
| Mollugo verticillata L. | 333 images |
| Monarda fistulosa L. | 2308 images |
| Monardella odoratissima Benth. | 220 images |
| Moneses uniflora (L.) A.Gray | 357 images |
| Monotropa hypopitys L. | 1162 images |
| Monotropa uniflora L. | 1104 images |
| Montia chamissoi (Ledeb. ex Spreng.) Greene | 5 images |
| Montia fontana L. | 265 images |
| Montia howellii S.Watson | 5 images |
| Montia linearis (Douglas) Greene | 13 images |
| Montia parvifolia (Moc. ex DC.) Greene | 20 images |
| Muhlenbergia glomerata (Willd.) Trin. | 1 images |
| Muhlenbergia mexicana (L.) Trin. | 6 images |
| Muscari botryoides (L.) Mill. | 5522 images |
| Myosotis arvensis (L.) Hill | 3226 images |
| Myosotis asiatica (Vestergr.) Schischk. & Serg. | 14 images |
| Myosotis discolor Pers. | 857 images |
| Myosotis laxa Lehm. | 329 images |
| Myosotis scorpioides L. | 5963 images |
| Myosotis stricta Link ex Roem. & Schult. | 703 images |
| Myosotis sylvatica Ehrh. ex Hoffm. | 525 images |
| Myosotis verna Nutt. | 12 images |
| Myrica californica Cham. | 32 images |
| Myrica gale L. | 691 images |
| Myriophyllum alterniflorum DC. | 49 images |
| Myriophyllum aquaticum (Vell.) Verdc. | 582 images |
| Myriophyllum heterophyllum Michx. | 9 images |
| Myriophyllum quitense Kunth | 12 images |
| Myriophyllum sibiricum Kom. | 7 images |
| Myriophyllum spicatum L. | 311 images |
| Myriophyllum verticillatum L. | 68 images |
| Myrrhis odorata (L.) Scop. | 1622 images |
| Nabalus albus (L.) Hook. | 182 images |
| Najas guadalupensis (Spreng.) Magnus | 14 images |
| Narcissus jonquilla L. | 2037 images |
| Narcissus poeticus L. | 3066 images |
| Narcissus pseudonarcissus L. | 9480 images |
| Nasturtium microphyllum (Boenn.) Rchb. | 72 images |
| Nasturtium officinale W.T.Aiton | 769 images |
| Navarretia divaricata Greene | 2 images |
| Navarretia intertexta (Benth.) Hook. | 26 images |
| Navarretia leucocephala Benth. | 28 images |
| Navarretia squarrosa (Eschsch.) Hook. & Arn. | 4 images |
| Nemophila breviflora A.Gray | 2 images |
| Nemophila parviflora Douglas ex Benth. | 13 images |
| Nemophila pedunculata Douglas ex Benth. | 6 images |
| Neottia auriculata (Wiegand) Szlach. | 1 images |
| Neottia banksiana (Lindl.) Rchb.f. | 2 images |
| Neottia convallarioides (Sw.) Rich. | 4 images |
| Neottia cordata (L.) Rich. | 213 images |
| Nepeta cataria L. | 3859 images |
| Nephrophyllidium crista-galli (Menzies ex Hook.) Gilg | 12 images |
| Neslia paniculata (L.) Desv. | 83 images |
| Nigella damascena L. | 13490 images |
| Nonea vesicaria (L.) Rchb. | 160 images |
| Nothochelone nemorosa (Douglas ex Lindl.) Straw | 35 images |
| Nuphar polysepala Engelm. | 4 images |
| Nuttallanthus canadensis (L.) D.A.Sutton | 23 images |
| Nymphaea odorata Aiton | 424 images |
| Nymphaea tetragona Georgi | 58 images |
| Odontarrhena muralis (Waldst. & Kit.) Endl. | 142 images |
| Odontites vulgaris Moench | 9 images |
| Oemleria cerasiformis (Torr. & A.Gray ex Hook. & Arn.) J.W.Landon | 278 images |
| Oenanthe sarmentosa C.Presl ex DC. | 80 images |
| Oenothera biennis L. | 14754 images |
| Oenothera cespitosa Nutt. | 51 images |
| Oenothera flava (A.Nelson) Garrett | 39 images |
| Oenothera glazioviana Micheli | 7753 images |
| Oenothera nuttallii Torr. & A.Gray | 2 images |
| Oenothera oakesiana (A.Gray) J.W.Robbins ex S.Watson | 6 images |
| Oenothera pallida Lindl. | 40 images |
| Oenothera parviflora L. | 1688 images |
| Oenothera perennis L. | 8 images |
| Oenothera suffrutescens (Moc. & Sessé ex Ser.) W.L.Wagner & Hoch | 93 images |
| Oenothera villosa Thunb. | 92 images |
| Olsynium douglasii (A.Dietr.) E.P.Bicknell | 9 images |
| Omalotheca sylvatica (L.) Sch.Bip. & F.W.Schultz | 537 images |
| Onoclea sensibilis L. | 1656 images |
| Onopordum acanthium L. | 5266 images |
| Ophioglossum pusillum Raf. | 4 images |
| Oplopanax horridus (Sm.) Miq. | 241 images |
| Opuntia fragilis (Nutt.) Haw. | 167 images |
| Opuntia polyacantha Haw. | 512 images |
| Origanum vulgare L. | 19932 images |
| Ornithogalum umbellatum L. | 8573 images |
| Ornithopus perpusillus L. | 587 images |
| Orobanche californica Cham. & Schltdl. | 2 images |
| Orobanche fasciculata Nutt. | 138 images |
| Orobanche ludoviciana Nutt. | 11 images |
| Orobanche pinorum Geyer ex Hook. | 3 images |
| Orobanche uniflora L. | 117 images |
| Orthilia secunda (L.) House | 488 images |
| Orthocarpus bracteosus Benth. | 5 images |
| Orthocarpus imbricatus S.Watson | 2 images |
| Orthocarpus luteus Nutt. | 5 images |
| Orthocarpus tenuifolius (Pursh) Benth. | 8 images |
| Oryzopsis asperifolia Michx. | 4 images |
| Osmorhiza berteroi DC. | 8 images |
| Osmorhiza claytonii (Michx.) C.B.Clarke | 25 images |
| Osmorhiza depauperata Phil. | 7 images |
| Osmorhiza longistylis (Torr.) DC. | 375 images |
| Osmorhiza occidentalis (Nutt.) Torr. | 16 images |
| Osmorhiza purpurea (J.M.Coult. & Rose) Suksd. | 5 images |
| Osmunda claytoniana L. | 423 images |
| Osmunda spectabilis Willd. | 4 images |
| Ostrya virginiana (Mill.) K.Koch | 358 images |
| Oxalis corniculata L. | 9353 images |
| Oxalis dillenii Jacq. | 2574 images |
| Oxalis oregana Nutt. | 402 images |
| Oxalis stricta L. | 2466 images |
| Oxalis suksdorfii Trel. | 21 images |
| Oxybasis glauca (L.) S.Fuentes, Uotila & Borsch | 261 images |
| Oxybasis rubra (L.) S.Fuentes, Uotila & Borsch | 652 images |
| Oxypolis occidentalis J.M.Coult. & Rose | 12 images |
| Oxyria digyna (L.) Hill | 403 images |
| Oxytropis campestris (L.) DC. | 551 images |
| Oxytropis deflexa (Pall.) DC. | 14 images |
| Oxytropis lambertii Pursh | 58 images |
| Ozomelis trifida (Graham) Rydb. | 7 images |
| Packera aurea (L.) Á.Löve & D.Löve | 189 images |
| Packera cana (Hook.) W.A.Weber & Á.Löve | 1 images |
| Palustricodon aparinoides (Pursh) Morin | 20 images |
| Panicum capillare L. | 682 images |
| Panicum dichotomiflorum Michx. | 81 images |
| Panicum miliaceum L. | 1230 images |
| Panicum virgatum L. | 952 images |
| Papaver rhoeas L. | 12437 images |
| Papaver somniferum L. | 10989 images |
| Parentucellia viscosa (L.) Caruel | 1057 images |
| Parietaria pensylvanica Muhl. ex Willd. | 208 images |
| Parnassia cirrata Piper | 15 images |
| Parnassia fimbriata K.D.Koenig | 42 images |
| Parnassia glauca Raf. | 35 images |
| Parnassia palustris L. | 4263 images |
| Paronychia sessiliflora Nutt. | 4 images |
| Parthenocissus quinquefolia (L.) Planch. | 16376 images |
| Parthenocissus vitacea (Knerr) Hitchc. | 3 images |
| Pastinaca sativa L. | 6591 images |
| Paxistima myrsinites (Pursh) Raf. | 86 images |
| Pectiantia pentandra (Hook.) Rydb. | 22 images |
| Pedicularis bracteosa Benth. | 47 images |
| Pedicularis canadensis L. | 207 images |
| Pedicularis contorta Benth. | 23 images |
| Pedicularis flammea L. | 6 images |
| Pedicularis groenlandica Retz. | 128 images |
| Pedicularis lanceolata Michx. | 22 images |
| Pedicularis lapponica L. | 63 images |
| Pedicularis oederi Vahl | 83 images |
| Pedicularis ornithorhynchos Benth. | 10 images |
| Pedicularis racemosa Douglas ex Benth. | 43 images |
| Pedicularis sudetica Willd. | 6 images |
| Pedicularis verticillata L. | 1008 images |
| Penstemon albertinus Greene | 21 images |
| Penstemon albidus Nutt. | 10 images |
| Penstemon confertus Douglas | 33 images |
| Penstemon davidsonii Greene | 93 images |
| Penstemon eriantherus Nutt. ex Pursh | 8 images |
| Penstemon fruticosus (Pursh) Greene | 57 images |
| Penstemon gracilis Nutt. | 21 images |
| Penstemon lyallii (A.Gray) A.Gray | 4 images |
| Penstemon nitidus Douglas ex Benth. | 16 images |
| Penstemon procerus Douglas ex Graham | 63 images |
| Penstemon pruinosus Douglas | 13 images |
| Penstemon richardsonii Douglas ex Lindl. | 8 images |
| Penstemon serrulatus Menzies ex Sm. | 50 images |
| Pentaglottis sempervirens (L.) Tausch ex L.H.Bailey | 6625 images |
| Penthorum sedoides L. | 45 images |
| Perideridia gairdneri (Hook. & Arn.) Mathias | 2 images |
| Persicaria amphibia (L.) Delarbre | 417 images |
| Persicaria hydropiper (L.) Delarbre | 687 images |
| Persicaria hydropiperoides (Michx.) Small | 19 images |
| Persicaria lapathifolia (L.) Delarbre | 3332 images |
| Persicaria longiseta (Bruijn) Kitag. | 7 images |
| Persicaria maculosa Gray | 9530 images |
| Persicaria nepalensis (Meisn.) H.Gross | 35 images |
| Persicaria punctata (Elliott) Small | 81 images |
| Persicaria sagittata (L.) H.Gross | 19 images |
| Petasites frigidus (L.) Fr. | 243 images |
| Petrorhagia nanteuilii (Burnat) P.W.Ball & Heywood | 146 images |
| Petrorhagia prolifera (L.) P.W.Ball & Heywood | 1352 images |
| Petrorhagia saxifraga (L.) Link | 1793 images |
| Petrosedum forsterianum (Sm.) Grulich | 996 images |
| Phacelia campanularia A.Gray | 243 images |
| Phacelia hastata Douglas ex Lehm. | 88 images |
| Phacelia leptosepala Rydb. | 4 images |
| Phacelia linearis (Pursh) Holz. | 63 images |
| Phacelia ramosissima Douglas ex Lehm. | 95 images |
| Phacelia sericea (Graham) A.Gray | 46 images |
| Phacelia tanacetifolia Benth. | 16785 images |
| Phacelia thermalis Greene | 1 images |
| Phalaris arundinacea L. | 3060 images |
| Phalaris canariensis L. | 494 images |
| Phedimus aizoon (L.) 't Hart | 1153 images |
| Phedimus hybridus (L.) 't Hart | 150 images |
| Phegopteris connectilis (Michx.) Watt | 739 images |
| Philadelphus lewisii Pursh | 1097 images |
| Phleum alpinum L. | 339 images |
| Phleum pratense L. | 2840 images |
| Phlox caespitosa Nutt. | 24 images |
| Phlox diffusa Benth. | 195 images |
| Phlox douglasii Hook. | 5 images |
| Phlox hoodii Richardson | 81 images |
| Phlox longifolia Nutt. | 112 images |
| Phlox pilosa L. | 192 images |
| Phlox speciosa Pursh | 84 images |
| Phlox subulata L. | 5190 images |
| Phragmites australis (Cav.) Trin. ex Steud. | 6622 images |
| Phryma leptostachya L. | 165 images |
| Phyllodoce caerulea (L.) Bab. | 166 images |
| Phyllodoce glanduliflora (Hook.) Coville | 19 images |
| Physalis virginiana Mill. | 3 images |
| Physocarpus capitatus (Pursh) Kuntze | 513 images |
| Physocarpus malvaceus (Greene) Kuntze | 12 images |
| Physostegia virginiana (L.) Benth. | 2078 images |
| Picea × albertiana S.Br. | 4 images |
| Picea × lutzii Little | 1 images |
| Picea engelmannii Parry ex Engelm. | 209 images |
| Picea laxa (Münchh.) Sarg. | 1865 images |
| Picea mariana (Mill.) Britton, Sterns & Poggenb. | 68 images |
| Picea sitchensis (Bong.) Carrière | 1120 images |
| Pilosella aurantiaca (L.) F.W.Schultz & Sch.Bip. | 8706 images |
| Pilosella caespitosa (Dumort.) P.D.Sell & C.West | 347 images |
| Pilosella flagellaris (Willd.) Arv.-Touv. | 1 images |
| Pilosella officinarum Vaill. | 2417 images |
| Pilosella piloselloides (Vill.) Soják | 275 images |
| Pinguicula villosa L. | 3 images |
| Pinguicula vulgaris L. | 1292 images |
| Pinus albicaulis Engelm. | 117 images |
| Pinus banksiana Lamb. | 407 images |
| Pinus contorta Douglas ex Loudon | 554 images |
| Pinus flexilis E.James | 57 images |
| Pinus monticola Douglas ex D.Don | 21 images |
| Pinus ponderosa Douglas ex C.Lawson | 480 images |
| Pinus resinosa Aiton | 1418 images |
| Pinus strobus L. | 4288 images |
| Plagiobothrys figuratus (Piper) I.M.Johnst. | 1 images |
| Plagiobothrys tenellus (Nutt.) A.Gray | 6 images |
| Plantago coronopus L. | 2675 images |
| Plantago elongata Pursh | 17 images |
| Plantago eriopoda Torr. | 12 images |
| Plantago indica L. | 242 images |
| Plantago lanceolata L. | 14213 images |
| Plantago major L. | 10438 images |
| Plantago maritima L. | 845 images |
| Plantago media L. | 5091 images |
| Plantago patagonica Jacq. | 52 images |
| Platanthera aquilonis Sheviak | 22 images |
| Platanthera dilatata (Pursh) Lindl. ex L.C.Beck | 4 images |
| Platanthera elegans Lindl. | 18 images |
| Platanthera ephemerantha R.M.Bateman | 1 images |
| Platanthera hookeri (Torr.) Lindl. | 1 images |
| Platanthera lacera (Michx.) G.Don | 41 images |
| Platanthera obtusata (Banks ex Pursh) Lindl. | 12 images |
| Platanthera orbiculata (Pursh) Lindl. | 45 images |
| Platanthera stricta Lindl. | 22 images |
| Pleuricospora fimbriolata A.Gray | 6 images |
| Poa alpina L. | 342 images |
| Poa angustifolia L. | 4 images |
| Poa annua L. | 3064 images |
| Poa arida Vasey | 2 images |
| Poa bolanderi Vasey | 10 images |
| Poa bulbosa L. | 1239 images |
| Poa compressa L. | 130 images |
| Poa confinis Vasey | 2 images |
| Poa cusickii Vasey | 7 images |
| Poa fendleriana (Steud.) Vasey | 12 images |
| Poa glauca Vahl | 40 images |
| Poa infirma Kunth | 53 images |
| Poa laxiflora Buckley | 2 images |
| Poa leptocoma Trin. | 9 images |
| Poa macrantha Vasey | 1 images |
| Poa marcida Hitchc. | 1 images |
| Poa nemoralis L. | 466 images |
| Poa nervosa (Hook.) Vasey | 3 images |
| Poa palustris L. | 131 images |
| Poa pratensis L. | 3186 images |
| Poa secunda J.Presl | 9 images |
| Poa stenantha Trin. | 1 images |
| Poa trivialis L. | 2040 images |
| Podagrostis humilis (Vasey) Björkman | 1 images |
| Pogonia ophioglossoides (L.) Ker Gawl. | 123 images |
| Polemonium boreale Adams | 8 images |
| Polemonium elegans Greene | 20 images |
| Polemonium micranthum Benth. | 4 images |
| Polemonium occidentale Greene | 103 images |
| Polemonium pulcherrimum Hook. | 97 images |
| Polemonium viscosum Nutt. | 30 images |
| Polycarpon tetraphyllum (L.) L. | 1305 images |
| Polycnemum arvense L. | 21 images |
| Polygala alba Nutt. | 26 images |
| Polygala senega L. | 29 images |
| Polygala verticillata L. | 5 images |
| Polygala vulgaris L. | 4412 images |
| Polygaloides paucifolia (Willd.) J.R.Abbott | 193 images |
| Polygonatum biflorum (Walter) Elliott | 773 images |
| Polygonum arenastrum Boreau | 179 images |
| Polygonum aviculare L. | 5184 images |
| Polygonum cilinode Michx. | 3 images |
| Polygonum douglasii Greene | 5 images |
| Polygonum majus (Meisn.) Piper | 2 images |
| Polygonum minimum S.Watson | 15 images |
| Polygonum polygaloides Meisn. | 1 images |
| Polypodium amorphum Suksd. | 9 images |
| Polypodium hesperium Maxon | 11 images |
| Polypodium scouleri Hook. & Grev. | 26 images |
| Polypodium virginianum L. | 287 images |
| Polypogon monspeliensis (L.) Desf. | 861 images |
| Polypogon viridis (Gouan) Breistr. | 240 images |
| Polystichum andersonii Hopkins | 2 images |
| Polystichum braunii (Spenn.) Fée | 172 images |
| Polystichum californicum (D.C.Eaton) Diels | 7 images |
| Polystichum imbricans (D.C.Eaton) D.H.Wagner | 46 images |
| Polystichum lemmonii Underw. | 20 images |
| Polystichum lonchitis (L.) Roth | 623 images |
| Polystichum munitum (Kaulf.) C.Presl | 933 images |
| Polystichum scopulinum (D.C.Eaton) Maxon | 9 images |
| Populus angustifolia E.James | 5 images |
| Populus balsamifera L. | 1702 images |
| Populus deltoides W.Bartram ex Marshall | 659 images |
| Populus grandidentata Michx. | 307 images |
| Populus tremuloides Michx. | 1407 images |
| Populus tristis Fisch. | 213 images |
| Portulaca oleracea L. | 12555 images |
| Potamogeton alpinus Balb. | 23 images |
| Potamogeton amplifolius Tuck. | 7 images |
| Potamogeton berchtoldii Fieber | 24 images |
| Potamogeton crispus L. | 167 images |
| Potamogeton epihydrus Raf. | 4 images |
| Potamogeton foliosus Raf. | 5 images |
| Potamogeton friesii Rupr. | 9 images |
| Potamogeton gramineus L. | 41 images |
| Potamogeton natans L. | 563 images |
| Potamogeton nodosus Poir. | 319 images |
| Potamogeton obtusifolius Mert. & W.D.J.Koch | 13 images |
| Potamogeton praelongus Wulfen | 22 images |
| Potamogeton pusillus L. | 44 images |
| Potentilla anglica Laichard. | 755 images |
| Potentilla arenosa (Turcz.) Juz. | 1 images |
| Potentilla argentea L. | 2852 images |
| Potentilla biennis Greene | 2 images |
| Potentilla concinna Richardson | 8 images |
| Potentilla drummondii Lehm. | 18 images |
| Potentilla flabellifolia Hook. ex Torr. & A.Gray | 1 images |
| Potentilla gracilis Douglas ex Hook. | 191 images |
| Potentilla hippiana Lehm. | 12 images |
| Potentilla hyparctica Malte | 2 images |
| Potentilla inclinata Vill. | 59 images |
| Potentilla indica (Andrews) Th.Wolf | 5530 images |
| Potentilla nivea L. | 29 images |
| Potentilla norvegica L. | 787 images |
| Potentilla pensylvanica L. | 21 images |
| Potentilla plattensis Nutt. | 1 images |
| Potentilla recta L. | 3707 images |
| Potentilla supina L. | 195 images |
| Primula cuneifolia Ledeb. | 3 images |
| Primula hendersonii (A.Gray) A.R.Mast & Reveal | 20 images |
| Primula jeffreyi (Van Houtte) A.R.Mast & Reveal | 48 images |
| Primula latiloba (A.Gray) A.R.Mast & Reveal | 3 images |
| Primula meadia (L.) A.R.Mast & Reveal | 271 images |
| Primula mistassinica Michx. | 4 images |
| Primula nutans Georgi | 6 images |
| Primula pauciflora (Durand) A.R.Mast & Reveal | 43 images |
| Primula veris L. | 14092 images |
| Prosartes hookeri Torr. | 130 images |
| Prosartes smithii (Hook.) Utech, Shinwari & Kawano | 66 images |
| Prosartes trachycarpa S.Watson | 38 images |
| Prunella vulgaris L. | 20271 images |
| Prunus americana Marshall | 75 images |
| Prunus avium (L.) L. | 20597 images |
| Prunus cerasifera Ehrh. | 22598 images |
| Prunus cerasus L. | 10950 images |
| Prunus laurocerasus L. | 20797 images |
| Prunus lusitanica L. | 4528 images |
| Prunus mahaleb L. | 6986 images |
| Prunus nigra Aiton | 4 images |
| Prunus pensylvanica L.f. | 496 images |
| Prunus pumila L. | 28 images |
| Prunus serotina Ehrh. | 8726 images |
| Prunus spinosa L. | 31489 images |
| Prunus susquehanae Willd. | 6 images |
| Prunus tomentosa Thunb. | 392 images |
| Prunus virginiana L. | 3084 images |
| Pseudocherleria macrocarpa (Pursh) Dillenb. & Kadereit | 1 images |
| Pseudognaphalium stramineum (Kunth) Anderb. | 103 images |
| Pseudotsuga menziesii (Mirb.) Franco | 4524 images |
| Psilocarphus brevissimus Nutt. | 36 images |
| Psilocarphus elatior A.Gray | 1 images |
| Psilocarphus tenellus Nutt. | 30 images |
| Pterospora andromedea Nutt. | 265 images |
| Puccinellia distans (Jacq.) Parl. | 101 images |
| Pulsatilla occidentalis (S.Watson) Freyn | 3 images |
| Purshia tridentata (Pursh) DC. | 187 images |
| Pyracantha coccinea M.Roem. | 15726 images |
| Pyrola americana G.Don | 27 images |
| Pyrola asarifolia Michx. | 120 images |
| Pyrola chlorantha Sw. | 356 images |
| Pyrola elliptica Nutt. | 153 images |
| Pyrola minor L. | 644 images |
| Pyrola picta Sm. | 124 images |
| Pyrrocoma carthamoides Hook. | 4 images |
| Pyrrocoma lanceolata (Hook.) Greene | 1 images |
| Pyrrocoma uniflora (Hook.) Greene | 13 images |
| Pyrus communis L. | 10666 images |
| Quercus garryana Douglas ex Hook. | 179 images |
| Quercus macrocarpa Michx. | 1343 images |
| Quercus robur L. | 17394 images |
| Ranunculus abortivus L. | 521 images |
| Ranunculus acris L. | 12332 images |
| Ranunculus alismifolius Geyer ex Benth. | 58 images |
| Ranunculus bulbosus L. | 5198 images |
| Ranunculus californicus Benth. | 184 images |
| Ranunculus eschscholtzii Schltdl. | 24 images |
| Ranunculus fascicularis Muhl. ex Bigelow | 70 images |
| Ranunculus ficaria L. | 30898 images |
| Ranunculus flabellaris Raf. | 11 images |
| Ranunculus flammula L. | 1963 images |
| Ranunculus glaberrimus Hook. | 71 images |
| Ranunculus gmelinii DC. | 4 images |
| Ranunculus hispidus Michx. | 221 images |
| Ranunculus hyperboreus Rottb. | 14 images |
| Ranunculus inamoenus Greene | 8 images |
| Ranunculus macounii Britton | 11 images |
| Ranunculus minimus (L.) E.H.L.Krause | 179 images |
| Ranunculus occidentalis Nutt. | 68 images |
| Ranunculus orthorhynchus Hook. | 44 images |
| Ranunculus pensylvanicus L.f. | 2 images |
| Ranunculus pygmaeus Wahlenb. | 16 images |
| Ranunculus repens L. | 15526 images |
| Ranunculus reptans L. | 8 images |
| Ranunculus sardous Crantz | 1004 images |
| Ranunculus sceleratus L. | 1482 images |
| Ranunculus trichophyllus Chaix | 525 images |
| Ranunculus uncinatus D.Don ex G.Don | 5 images |
| Raphanus raphanistrum L. | 13947 images |
| Ratibida columnifera (Nutt.) Wooton & Standl. | 462 images |
| Reseda alba L. | 2047 images |
| Reseda lutea L. | 6359 images |
| Reseda luteola L. | 3192 images |
| Reseda odorata L. | 75 images |
| Reynoutria × bohemica Chrtek & Chrtková | 124 images |
| Reynoutria japonica Houtt. | 10959 images |
| Reynoutria sachalinensis (F.Schmidt) Nakai | 2507 images |
| Rhamnus cathartica L. | 5473 images |
| Rhamphospermum arvense (L.) Andrz. ex Besser | 10470 images |
| Rhamphospermum nigrum (L.) Al-Shehbaz | 847 images |
| Rheum rhabarbarum L. | 623 images |
| Rhinanthus minor L. | 2993 images |
| Rhodiola integrifolia Raf. | 75 images |
| Rhododendron albiflorum Hook. | 34 images |
| Rhododendron columbianum (Piper) Harmaja | 78 images |
| Rhododendron groenlandicum (Oeder) Kron & Judd | 60 images |
| Rhododendron lapponicum (L.) Wahlenb. | 296 images |
| Rhododendron macrophyllum D.Don ex G.Don | 198 images |
| Rhododendron menziesii Craven | 24 images |
| Rhododendron tomentosum Harmaja | 559 images |
| Rhus glabra L. | 1868 images |
| Rhus trilobata Nutt. | 19 images |
| Rhynchospora alba (L.) Vahl | 185 images |
| Rhynchospora fusca (L.) W.T.Aiton | 57 images |
| Ribes acerifolium Howell | 2 images |
| Ribes americanum Mill. | 121 images |
| Ribes aureum Pursh | 1760 images |
| Ribes cereum Douglas | 157 images |
| Ribes divaricatum Douglas | 27 images |
| Ribes glandulosum Weber | 16 images |
| Ribes hirtellum Michx. | 6 images |
| Ribes hudsonianum Richardson | 5 images |
| Ribes inerme Rydb. | 24 images |
| Ribes lacustre (Pers.) Poir. | 90 images |
| Ribes laxiflorum Pursh | 15 images |
| Ribes lobbii A.Gray | 1 images |
| Ribes montigenum McClatchie | 30 images |
| Ribes oxyacanthoides L. | 2 images |
| Ribes rubrum L. | 5783 images |
| Ribes sanguineum Pursh | 6368 images |
| Ribes triste Pall. | 13 images |
| Ribes viscosissimum Pursh | 25 images |
| Romanzoffia tracyi Jeps. | 1 images |
| Rorippa austriaca (Crantz) Besser | 179 images |
| Rorippa curvipes Greene | 10 images |
| Rorippa curvisiliqua (Hook.) Bessey ex Britton | 4 images |
| Rorippa indica (L.) Hiern | 1 images |
| Rorippa palustris (L.) Besser | 1037 images |
| Rorippa sylvestris (L.) Besser | 2281 images |
| Rosa × dulcissima Lunell | 1 images |
| Rosa acicularis Lindl. | 25 images |
| Rosa arkansana Porter | 103 images |
| Rosa blanda Aiton | 53 images |
| Rosa canina L. | 21797 images |
| Rosa gymnocarpa Nutt. | 6 images |
| Rosa multiflora Thunb. | 5738 images |
| Rosa nutkana C.Presl | 16 images |
| Rosa pisocarpa A.Gray | 2 images |
| Rosa rubiginosa L. | 4232 images |
| Rosa rugosa Thunb. | 9806 images |
| Rosa woodsii Lindl. | 979 images |
| Rotala ramosior (L.) Koehne | 9 images |
| Rubus allegheniensis Porter | 71 images |
| Rubus arcticus L. | 101 images |
| Rubus chamaemorus L. | 372 images |
| Rubus idaeus L. | 7433 images |
| Rubus leucodermis (Douglas ex Hook.) Douglas ex Torr. & A.Gray | 3 images |
| Rubus nemoralis P.J.Müll. | 1079 images |
| Rubus pedatus Sm. | 38 images |
| Rubus phoenicolasius Maxim. | 1884 images |
| Rubus pubescens Raf. | 140 images |
| Rubus spectabilis Pursh | 1218 images |
| Rubus ursinus Cham. & Schltdl. | 192 images |
| Rubus vestitus Weihe | 558 images |
| Rudbeckia hirta L. | 4954 images |
| Rudbeckia laciniata L. | 2511 images |
| Rumex acetosa L. | 6871 images |
| Rumex acetosella L. | 5452 images |
| Rumex confertus Willd. | 96 images |
| Rumex conglomeratus Murray | 2935 images |
| Rumex crispus L. | 10124 images |
| Rumex dentatus L. | 20 images |
| Rumex longifolius DC. | 1472 images |
| Rumex obtusifolius L. | 13049 images |
| Rumex occidentalis S.Watson | 4 images |
| Rumex paucifolius Nutt. | 13 images |
| Rumex pseudonatronatus (Borbás) Murb. | 5 images |
| Rumex sanguineus L. | 1511 images |
| Rumex stenophyllus Ledeb. | 1 images |
| Rumex thyrsiflorus Fingerh. | 329 images |
| Rumex venosus Pursh | 12 images |
| Ruppia cirrhosa (Petagna) Grande | 33 images |
| Ruppia maritima L. | 25 images |
| Ruta graveolens L. | 3360 images |
| Sabulina stricta (Sw.) Rchb. | 3 images |
| Sagina apetala Ard. | 233 images |
| Sagina japonica (Sw.) Ohwi | 4 images |
| Sagina maxima A.Gray | 10 images |
| Sagina nodosa (L.) Fenzl | 122 images |
| Sagina procumbens L. | 1002 images |
| Sagina saginoides (L.) H.Karst. | 76 images |
| Sagittaria latifolia Willd. | 715 images |
| Sagittaria rigida Pursh | 8 images |
| Salicornia perennis Mill. | 108 images |
| Salicornia rubra A.Nelson | 15 images |
| Salicornia virginica L. | 11 images |
| Salix × fragilis L. | 118 images |
| Salix alba L. | 10234 images |
| Salix amygdaloides Andersson | 27 images |
| Salix arbusculoides Andersson | 2 images |
| Salix arctica Pall. | 20 images |
| Salix barrattiana Hook. | 4 images |
| Salix bebbiana Sarg. | 40 images |
| Salix boothii Dorn | 1 images |
| Salix brachycarpa Nutt. | 1 images |
| Salix candida Flüggé ex Willd. | 5 images |
| Salix cascadensis Cockerell | 1 images |
| Salix commutata Bebb | 11 images |
| Salix daphnoides Vill. | 154 images |
| Salix discolor Muhl. | 465 images |
| Salix drummondiana Barratt ex Hook. | 2 images |
| Salix exigua Nutt. | 245 images |
| Salix geyeriana Andersson | 5 images |
| Salix glauca L. | 215 images |
| Salix herbacea L. | 323 images |
| Salix hookeriana Barratt ex Hook. | 15 images |
| Salix humilis Marshall | 17 images |
| Salix interior Rowlee | 7 images |
| Salix lanata L. | 155 images |
| Salix lasiandra Benth. | 3 images |
| Salix lemmonii Bebb | 2 images |
| Salix lucida Muhl. | 64 images |
| Salix melanopsis Nutt. | 8 images |
| Salix nivalis Hook. | 9 images |
| Salix pentandra L. | 1169 images |
| Salix petrophila Rydb. | 32 images |
| Salix planifolia Pursh | 7 images |
| Salix polaris Wahlenb. | 11 images |
| Salix prolixa Andersson | 13 images |
| Salix pyrifolia Andersson | 2 images |
| Salix reticulata L. | 436 images |
| Salix scouleriana Barratt ex Hook. | 20 images |
| Salix sitchensis Sanson ex Bong. | 45 images |
| Salix vestita Pursh | 3 images |
| Salsola tragus L. | 51 images |
| Salvia × sylvestris L. | 1411 images |
| Sambucus canadensis L. | 4699 images |
| Sambucus cerulea Raf. | 11 images |
| Sambucus racemosa L. | 9010 images |
| Sandbergia whitedii (Piper) Greene | 3 images |
| Sanguinaria canadensis L. | 1662 images |
| Sanguisorba minor Scop. | 8952 images |
| Sanguisorba officinalis L. | 3361 images |
| Sanicula arctopoides Hook. & Arn. | 121 images |
| Sanicula bipinnatifida Douglas | 210 images |
| Sanicula crassicaulis Poepp. ex DC. | 211 images |
| Sanicula graveolens Poepp. ex DC. | 18 images |
| Sanicula marilandica L. | 29 images |
| Saponaria officinalis L. | 15813 images |
| Sarcobatus vermiculatus (Hook.) Torr. | 45 images |
| Sarracenia purpurea L. | 1267 images |
| Saussurea americana Eaton | 6 images |
| Saxifraga adscendens L. | 45 images |
| Saxifraga aizoides L. | 2070 images |
| Saxifraga bronchialis L. | 56 images |
| Saxifraga cernua L. | 28 images |
| Saxifraga cespitosa L. | 91 images |
| Saxifraga hirculus L. | 116 images |
| Saxifraga oppositifolia L. | 1046 images |
| Saxifraga paniculata Mill. | 2617 images |
| Saxifraga tricuspidata Rottb. | 9 images |
| Saxifraga tridactylites L. | 1446 images |
| Scandix pecten-veneris L. | 2780 images |
| Scandosorbus intermedia (Ehrh.) Sennikov | 3942 images |
| Scheuchzeria palustris L. | 107 images |
| Schizachyrium scoparium (Michx.) Nash | 50 images |
| Schoenoplectus pungens (Vahl) Palla | 60 images |
| Schoenoplectus tabernaemontani (C.C.Gmel.) Palla | 85 images |
| Scilla siberica Andrews | 2402 images |
| Scirpus atrovirens Willd. | 197 images |
| Scirpus cyperinus (L.) Kunth | 112 images |
| Scirpus microcarpus J.Presl & C.Presl | 4 images |
| Scleranthus annuus L. | 295 images |
| Sclerochloa dura (L.) P.Beauv. | 60 images |
| Scrophularia californica Cham. & Schltdl. | 47 images |
| Scrophularia lanceolata Pursh | 15 images |
| Scutellaria angustifolia Pursh | 4 images |
| Scutellaria galericulata L. | 1285 images |
| Scutellaria lateriflora L. | 89 images |
| Scutellaria parvula Michx. | 34 images |
| Secale cereale L. | 3536 images |
| Sedum acre L. | 7765 images |
| Sedum album L. | 10122 images |
| Sedum divergens S.Watson | 20 images |
| Sedum lanceolatum Torr. | 92 images |
| Sedum oreganum Nutt. | 116 images |
| Sedum spathulifolium Hook. | 1428 images |
| Sedum stenopetalum Pursh | 19 images |
| Selaginella selaginoides (L.) P.Beauv. ex Schrank & Mart. | 143 images |
| Senecio eremophilus Richardson | 2 images |
| Senecio hydrophilus Nutt. | 6 images |
| Senecio integerrimus Nutt. | 148 images |
| Senecio lugens Richardson | 3 images |
| Senecio sylvaticus L. | 2131 images |
| Senecio triangularis Hook. | 276 images |
| Senecio viscosus L. | 753 images |
| Senecio vulgaris L. | 9419 images |
| Setaria italica (L.) P.Beauv. | 1325 images |
| Setaria pumila (Poir.) Roem. & Schult. | 2542 images |
| Setaria verticillata (L.) P.Beauv. | 1240 images |
| Setaria viridis (L.) P.Beauv. | 156 images |
| Shepherdia argentea (Pursh) Nutt. | 52 images |
| Shepherdia canadensis (L.) Nutt. | 151 images |
| Sherardia arvensis L. | 4255 images |
| Sibbaldia procumbens L. | 178 images |
| Sibbaldia tridentata (Aiton) Paule & Soják | 43 images |
| Sidalcea hendersonii S.Watson | 3 images |
| Sidalcea oregana (Nutt.) A.Gray | 3 images |
| Silene acaulis (L.) Jacq. | 2794 images |
| Silene antirrhina L. | 14 images |
| Silene chalcedonica (L.) E.H.L.Krause | 1132 images |
| Silene conoidea L. | 14 images |
| Silene coronaria (L.) Clairv. | 6911 images |
| Silene csereii Baumg. | 4 images |
| Silene dichotoma Ehrh. | 1298 images |
| Silene dioica (L.) Clairv. | 18062 images |
| Silene douglasii Hook. | 49 images |
| Silene gallica L. | 1806 images |
| Silene latifolia Poir. | 19974 images |
| Silene noctiflora L. | 1654 images |
| Silene parryi (S.Watson) C.L.Hitchc. & Maguire | 1 images |
| Silene pendula L. | 1883 images |
| Silene scouleri Hook. | 2 images |
| Silene uralensis (Rupr.) Bocquet | 14 images |
| Silene vulgaris (Moench) Garcke | 15491 images |
| Silybum marianum (L.) Gaertn. | 9436 images |
| Sinapis alba L. | 6376 images |
| Sisymbrium altissimum L. | 349 images |
| Sisymbrium loeselii L. | 1501 images |
| Sisymbrium officinale (L.) Scop. | 6071 images |
| Sisymbrium orientale L. | 338 images |
| Sisyrinchium californicum (Ker Gawl.) Dryand. | 83 images |
| Sisyrinchium idahoense E.P.Bicknell | 7 images |
| Sisyrinchium montanum Greene | 173 images |
| Sisyrinchium mucronatum Michx. | 5 images |
| Sium suave Walter | 65 images |
| Smilax lasioneura Hook. | 13 images |
| Solanum alatum Moench | 3 images |
| Solanum americanum Mill. | 5678 images |
| Solanum dulcamara L. | 14207 images |
| Solanum lycopersicum L. | 16039 images |
| Solanum nigrum L. | 12891 images |
| Solanum triflorum Nutt. | 57 images |
| Solidago altissima L. | 616 images |
| Solidago canadensis L. | 13724 images |
| Solidago gigantea Aiton | 6306 images |
| Solidago hispida Muhl. ex Willd. | 23 images |
| Solidago juncea Aiton | 450 images |
| Solidago missouriensis Nutt. | 26 images |
| Solidago mollis Bartl. | 5 images |
| Solidago multiradiata Aiton | 39 images |
| Solidago nemoralis Aiton | 163 images |
| Solidago ptarmicoides (Torr. & A.Gray) B.Boivin | 17 images |
| Solidago rigida L. | 164 images |
| Solidago simplex Kunth | 18 images |
| Solidago uliginosa Nutt. | 32 images |
| Soliva sessilis Ruiz & Pav. | 155 images |
| Sonchus arvensis L. | 5089 images |
| Sonchus asper (L.) Hill | 13785 images |
| Sorbaria sorbifolia (L.) A.Braun | 3001 images |
| Sorbus aucuparia L. | 19079 images |
| Sorbus decora (Sarg.) C.K.Schneid. | 16 images |
| Sorbus scopulina Greene | 51 images |
| Sorbus sitchensis M.Roem. | 1 images |
| Sorghastrum nutans (L.) Nash | 173 images |
| Sparganium americanum Nutt. | 16 images |
| Sparganium angustifolium Michx. | 270 images |
| Sparganium emersum Rehmann | 191 images |
| Sparganium eurycarpum Engelm. | 48 images |
| Sparganium natans L. | 50 images |
| Spergula arvensis L. | 1183 images |
| Spergularia diandra (Guss.) Heldr. | 43 images |
| Spergularia macrotheca (Hornem. ex Cham. & Schltdl.) Heynh. | 1 images |
| Spergularia marina (L.) Besser | 617 images |
| Spergularia rubra (L.) J.Presl & C.Presl | 1488 images |
| Sphaeralcea coccinea (Nutt.) Rydb. | 163 images |
| Sphenopholis intermedia (Rydb.) Rydb. | 9 images |
| Sphenopholis obtusata (Michx.) Scribn. | 9 images |
| Spiraea alba Du Roi | 2103 images |
| Spiraea douglasii Hook. | 3523 images |
| Spiraea splendens Baumann ex K.Koch | 8 images |
| Spiranthes lacera (Raf.) Raf. | 64 images |
| Spiranthes magnicamporum Sheviak | 26 images |
| Spiranthes romanzoffiana Cham. | 90 images |
| Spirodela polyrhiza (L.) Schleid. | 189 images |
| Sporobolus × townsendii (H.Groves & J.Groves) P.M.Peterson & Saarela | 28 images |
| Sporobolus airoides (Torr.) Torr. | 24 images |
| Sporobolus anglicus (C.E.Hubb.) P.M.Peterson & Saarela | 73 images |
| Sporobolus cryptandrus (Torr.) A.Gray | 9 images |
| Sporobolus heterolepis (A.Gray) A.Gray | 14 images |
| Sporobolus hookerianus P.M.Peterson & Saarela | 4 images |
| Sporobolus michauxianus (Hitchc.) P.M.Peterson & Saarela | 63 images |
| Sporobolus neglectus Nash | 2 images |
| Sporobolus pumilus (Roth) P.M.Peterson & Saarela | 47 images |
| Sporobolus rigidus (Buckley) P.M.Peterson | 7 images |
| Sporobolus vaginiflorus (Torr. ex A.Gray) Alph.Wood | 8 images |
| Stachys ajugoides Benth. | 41 images |
| Stachys arvensis (L.) L. | 605 images |
| Stachys byzantina K.Koch | 7946 images |
| Stachys chamissonis Benth. | 78 images |
| Stachys mexicana Benth. | 10 images |
| Stachys palustris L. | 5102 images |
| Stachys pilosa Nutt. | 16 images |
| Stellaria alsine Grimm | 263 images |
| Stellaria americana (Porter ex B.L.Rob.) Standl. | 1 images |
| Stellaria aquatica (L.) Scop. | 1530 images |
| Stellaria borealis Bigelow | 3 images |
| Stellaria crassifolia Ehrh. | 20 images |
| Stellaria graminea L. | 4530 images |
| Stellaria longifolia Muhl. ex Willd. | 11 images |
| Stellaria longipes Goldie | 24 images |
| Stellaria media (L.) Vill. | 12431 images |
| Stellaria nitens Nutt. | 5 images |
| Stellaria obtusa Engelm. | 2 images |
| Stenotus armerioides Nutt. | 14 images |
| Streptopus amplexifolius (L.) DC. | 558 images |
| Streptopus lanceolatus (Aiton) Reveal | 104 images |
| Streptopus streptopoides (Ledeb.) Frye & Rigg | 10 images |
| Stuckenia filiformis (Pers.) Börner | 5 images |
| Stuckenia pectinata (L.) Börner | 111 images |
| Suaeda maritima (L.) Dumort. | 866 images |
| Subularia aquatica L. | 26 images |
| Suksdorfia violacea A.Gray | 3 images |
| Swertia perennis L. | 604 images |
| Symphoricarpos albus (L.) S.F.Blake | 9964 images |
| Symphoricarpos occidentalis (R.Br.) Hook. | 58 images |
| Symphoricarpos rotundifolius A.Gray | 42 images |
| Symphyotrichum chilense (Nees) G.L.Nesom | 3 images |
| Symphyotrichum cordifolium (L.) G.L.Nesom | 766 images |
| Symphyotrichum ericoides (L.) G.L.Nesom | 1544 images |
| Symphyotrichum foliaceum (Lindl. ex DC.) G.L.Nesom | 1 images |
| Symphyotrichum laeve (L.) Á.Löve & D.Löve | 181 images |
| Symphyotrichum lanceolatum (Willd.) G.L.Nesom | 2897 images |
| Symphyotrichum lateriflorum (L.) Á.Löve & D.Löve | 64 images |
| Symphyotrichum novae-angliae (L.) G.L.Nesom | 2570 images |
| Symphyotrichum pilosum (Willd.) G.L.Nesom | 317 images |
| Symphyotrichum puniceum (L.) Á.Löve & D.Löve | 101 images |
| Symphyotrichum sericeum (Vent.) G.L.Nesom | 11 images |
| Symphyotrichum spathulatum (Lindl.) G.L.Nesom | 4 images |
| Symphyotrichum subspicatum (Nees) G.L.Nesom | 23 images |
| Symphytum × uplandicum Nyman | 586 images |
| Symphytum asperum Lepech. | 2698 images |
| Symphytum officinale L. | 19828 images |
| Syringa vulgaris L. | 20485 images |
| Tanacetum balsamita L. | 533 images |
| Tanacetum bipinnatum Sch.Bip. | 29 images |
| Tanacetum parthenium (L.) Sch.Bip. | 8558 images |
| Tanacetum vulgare L. | 17131 images |
| Taraxacum drucei Dahlst. | 4 images |
| Taraxacum erythrospermum Andrz. ex Besser | 1126 images |
| Taraxacum fasciatum Dahlst. | 4 images |
| Taraxacum retroflexum H.Lindb. | 3 images |
| Taraxacum sect. Taraxacum F.H.Wigg. | 14406 images |
| Taxus brevifolia Nutt. | 1081 images |
| Taxus canadensis Marshall | 1240 images |
| Teesdalia nudicaulis (L.) W.T.Aiton | 30 images |
| Tellima grandiflora (Pursh) Douglas ex Lindl. | 1355 images |
| Tetradymia canescens DC. | 85 images |
| Tetraneuris acaulis Greene | 25 images |
| Teucrium canadense L. | 588 images |
| Thalictrum alpinum L. | 62 images |
| Thalictrum dasycarpum Fisch., C.A.Mey. & Avé-Lall. | 9 images |
| Thalictrum occidentale A.Gray | 37 images |
| Thalictrum revolutum DC. | 24 images |
| Thalictrum venulosum Trel. | 1 images |
| Thelypodium laciniatum (Hook.) Endl. | 2 images |
| Thelypodium milleflorum A.Nelson | 5 images |
| Thelypteris palustris Schott | 337 images |
| Thelypteris quelpartensis (Christ) Ching | 17 images |
| Thesium ramosum Hayne | 11 images |
| Thinopyrum acutum (DC.) Banfi | 52 images |
| Thinopyrum elongatum (Host) D.R.Dewey | 21 images |
| Thinopyrum intermedium (Host) Barkworth & D.R.Dewey | 19 images |
| Thladiantha dubia Bunge | 122 images |
| Thlaspi arvense L. | 2785 images |
| Thuja occidentalis L. | 7105 images |
| Thuja plicata Donn ex D.Don | 2695 images |
| Thymus pulegioides L. | 2333 images |
| Thysanocarpus curvipes Hook. | 70 images |
| Tiarella trifoliata L. | 158 images |
| Tilia americana L. | 4642 images |
| Tofieldia pusilla (Michx.) Pers. | 88 images |
| Tolmiea menziesii (Pursh) Torr. & A.Gray | 68 images |
| Torilis arvensis (Huds.) Link | 5027 images |
| Torilis japonica (Houtt.) DC. | 1502 images |
| Torreyochloa pallida (Torr.) Church | 10 images |
| Townsendia exscapa (Richardson) Porter | 12 images |
| Townsendia hookeri Beaman | 10 images |
| Townsendia parryi Eaton | 4 images |
| Toxicodendron diversilobum (Torr. & A.Gray) Greene | 1334 images |
| Toxicodendron rydbergii (Small ex Rydb.) Greene | 132 images |
| Toxicoscordion venenosum (S.Watson) Rydb. | 44 images |
| Tradescantia occidentalis (Britton) Smyth | 111 images |
| Tragopogon dubius Scop. | 6407 images |
| Tragopogon porrifolius L. | 4991 images |
| Tragopogon pratensis L. | 8644 images |
| Trautvetteria caroliniensis (Walter) Vail | 38 images |
| Triantha glutinosa (Michx.) Baker | 38 images |
| Tribulus terrestris L. | 2146 images |
| Trichophorum alpinum (L.) Pers. | 122 images |
| Trichophorum cespitosum (L.) Hartm. | 375 images |
| Trichophorum pumilum (Vahl) Schinz & Thell. | 19 images |
| Trichostema oblongum Benth. | 14 images |
| Trifolium microcephalum Pursh | 5 images |
| Trifolium oliganthum Steud. | 5 images |
| Triglochin maritima L. | 377 images |
| Triglochin palustris L. | 142 images |
| Trillium cernuum L. | 74 images |
| Trillium ovatum Pursh | 522 images |
| Triodanis perfoliata (L.) Nieuwl. | 601 images |
| Triphysaria pusilla (Benth.) T.I.Chuang & Heckard | 2 images |
| Tripleurospermum inodorum (L.) Sch.Bip. | 1851 images |
| Trisetum flavescens (L.) P.Beauv. | 657 images |
| Triteleia grandiflora Lindl. | 58 images |
| Triteleia hyacinthina (Lindl.) Greene | 89 images |
| Triticum aestivum L. | 21636 images |
| Triticum turgidum L. | 1501 images |
| Trollius laxus Salisb. | 23 images |
| Tsuga heterophylla (Raf.) Sarg. | 1062 images |
| Tsuga mertensiana (Bong.) Carrière | 79 images |
| Turritis glabra L. | 1007 images |
| Tussilago farfara L. | 11979 images |
| Typha × glauca Godr. | 49 images |
| Typha angustifolia L. | 1025 images |
| Typha latifolia L. | 3451 images |
| Ulmus americana L. | 4582 images |
| Urtica dioica L. | 14922 images |
| Urtica gracilis Aiton | 1 images |
| Urtica urens L. | 4274 images |
| Utricularia gibba L. | 46 images |
| Utricularia intermedia Hayne | 81 images |
| Utricularia minor L. | 131 images |
| Utricularia ochroleuca R.W.Hartm. | 13 images |
| Uvularia grandiflora Sm. | 268 images |
| Uvularia sessilifolia L. | 135 images |
| Vaccinium angustifolium Aiton | 696 images |
| Vaccinium cespitosum Michx. | 3 images |
| Vaccinium corymbosum L. | 2571 images |
| Vaccinium deliciosum Piper | 11 images |
| Vaccinium macrocarpon Aiton | 321 images |
| Vaccinium membranaceum Douglas ex Torr. | 66 images |
| Vaccinium microcarpum (Turcz. ex Rupr.) Schmalh. | 34 images |
| Vaccinium myrtilloides Michx. | 50 images |
| Vaccinium myrtillus L. | 5600 images |
| Vaccinium ovalifolium Sm. | 48 images |
| Vaccinium ovatum Pursh | 332 images |
| Vaccinium oxycoccos L. | 482 images |
| Vaccinium parvifolium Sm. | 233 images |
| Vaccinium scoparium Leiberg ex Coville | 26 images |
| Vaccinium uliginosum L. | 1500 images |
| Vaccinium vitis-idaea L. | 2809 images |
| Valeriana congesta (Lindl.) Byng & Christenh. | 16 images |
| Valeriana dioica L. | 3611 images |
| Valeriana locusta L. | 6423 images |
| Valeriana officinalis L. | 8495 images |
| Valeriana sitchensis Bong. | 84 images |
| Vallisneria americana Michx. | 9 images |
| Veratrum viride Aiton | 626 images |
| Verbascum blattaria L. | 3474 images |
| Verbascum nigrum L. | 9382 images |
| Verbascum phlomoides L. | 3147 images |
| Verbascum thapsus L. | 16544 images |
| Verbascum virgatum Stokes | 1486 images |
| Verbena bracteata Cav. ex Lag. & Rodr. | 49 images |
| Verbena hastata L. | 1067 images |
| Verbena urticifolia L. | 826 images |
| Vernonia fasciculata Michx. | 114 images |
| Veronica anagallis-aquatica L. | 1637 images |
| Veronica arvensis L. | 3232 images |
| Veronica beccabunga L. | 2650 images |
| Veronica catenata Pennell | 113 images |
| Veronica chamaedrys L. | 19074 images |
| Veronica cusickii A.Gray | 18 images |
| Veronica filiformis Sm. | 3152 images |
| Veronica hederifolia L. | 3188 images |
| Veronica longifolia L. | 1841 images |
| Veronica officinalis L. | 3640 images |
| Veronica peregrina L. | 346 images |
| Veronica persica Poir. | 14497 images |
| Veronica polita Fr. | 2411 images |
| Veronica scutellata L. | 292 images |
| Veronica serpyllifolia L. | 3687 images |
| Veronica verna L. | 190 images |
| Veronica wormskjoldii Roem. & Schult. | 5 images |
| Veronicastrum virginicum (L.) Farw. | 1194 images |
| Viburnum edule (Michx.) Raf. | 21 images |
| Viburnum lentago L. | 305 images |
| Viburnum rafinesqueanum Schult. | 3 images |
| Viburnum trilobum Marshall | 1784 images |
| Vicia americana Muhl. ex Willd. | 92 images |
| Vicia nigricans Hook. & Arn. | 17 images |
| Vincetoxicum rossicum (Kleopow) Barbar. | 12 images |
| Viola adunca Sm. | 190 images |
| Viola arvensis Murray | 5247 images |
| Viola biflora L. | 1123 images |
| Viola blanda Willd. | 296 images |
| Viola glabella Nutt. | 167 images |
| Viola labradorica Schrank | 226 images |
| Viola lanceolata L. | 58 images |
| Viola macloskeyi F.E.Lloyd | 10 images |
| Viola nephrophylla Greene | 2 images |
| Viola nuttallii Pursh | 36 images |
| Viola odorata L. | 14789 images |
| Viola orbiculata (A.Gray) Geyer ex B.D.Jacks. | 1 images |
| Viola palustris L. | 1085 images |
| Viola pedatifida G.Don | 19 images |
| Viola purpurea Kellogg | 113 images |
| Viola renifolia A.Gray | 6 images |
| Viola riviniana Rchb. | 6369 images |
| Viola selkirkii Pursh ex Goldie | 10 images |
| Viola sempervirens Greene | 118 images |
| Viola sororia Willd. | 1728 images |
| Viola tricolor L. | 8201 images |
| Viscum album L. | 2519 images |
| Vitis riparia Michx. | 819 images |
| Vitis vinifera L. | 16452 images |
| Wolffia columbiana H.Karst. | 1 images |
| Woodsia alpina (Bolton) Gray | 61 images |
| Woodsia ilvensis (L.) R.Br. | 96 images |
| Woodsia oregana D.C.Eaton | 14 images |
| Woodsia scopulina D.C.Eaton | 9 images |
| Woodwardia fimbriata Sm. | 193 images |
| Wyethia sagittata (Pursh) Mabb. | 241 images |
| Xanthium orientale L. | 465 images |
| Xanthium spinosum L. | 982 images |
| Xerophyllum tenax (Pursh) Nutt. | 132 images |
| Yabea microcarpa (Hook. & Arn.) Koso-Pol. | 6 images |
| Yucca glauca Nutt. | 166 images |
| Zannichellia palustris L. | 61 images |
| Zizania aquatica L. | 12 images |
| Zizia aptera (A.Gray) Fernald | 266 images |
| Zizia aurea (L.) W.D.J.Koch | 66 images |
| Zostera marina L. | 130 images |