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Invasive plants
Invasive species potentially threatening livelihoods and the environment around the world
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Families
Genera
Species
108
Family:
Asteraceae
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Acanthospermum australe
(Loefl.) Kuntze
Spiny-bur
82
53
Observations
Asteraceae
Acanthospermum hispidum
DC.
Bristly starbur
101
73
Observations
Asteraceae
Achillea millefolium
L.
LC
Least Concern
Common yarrow
24,860
20,755
Observations
Asteraceae
Acmella uliginosa
(Sw.) Cass.
LC
Least Concern
Marsh para cress
63
33
Observations
Asteraceae
Ageratina adenophora
(Spreng.) R.M.King & H.Rob.
Croftonweed
574
438
Observations
Asteraceae
Ageratina riparia
(Regel) R.M.King & H.Rob.
Mistflower
518
243
Observations
Asteraceae
Ageratum conyzoides
L.
Billy goat weed
533
418
Observations
Asteraceae
Ageratum houstonianum
Mill.
Bluemink
2,999
2,573
Observations
Asteraceae
Ambrosia artemisiifolia
L.
Annual ragweed
4,656
3,673
Observations
Asteraceae
Ambrosia psilostachya
DC.
Perennial ragweed
354
266
Observations
Asteraceae
Ambrosia trifida
L.
Giant Ragweed
937
769
Observations
Asteraceae
Anthemis cotula
L.
Chamomile
1,429
1,124
Observations
Asteraceae
Arctotheca calendula
(L.) Levyns
Capeweed
1,387
1,073
Observations
Asteraceae
Artemisia biennis
Willd.
Biennial wormwood
131
71
Observations
Asteraceae
Baccharis halimifolia
L.
LC
Least Concern
Eastern baccharis
1,464
1,036
Observations
Asteraceae
Baccharis pilularis
DC.
Coyote brush
692
631
Observations
Asteraceae
Bidens alba
(L.) DC.
Romerillo
222
151
Observations
Asteraceae
Bidens frondosa
L.
LC
Least Concern
Devil's Beggarticks
2,692
1,929
Observations
Asteraceae
Bidens pilosa
L.
Spanish-needles
2,735
2,007
Observations
Asteraceae
Carduus nutans
L.
Nodding thistle
4,198
3,001
Observations
Asteraceae
Carduus pycnocephalus
L.
Italian thistle
3,964
2,833
Observations
Asteraceae
Centaurea debeauxii
Godr. & Gren.
Meadow knapweed
8
4
Observations
Asteraceae
Centaurea diffusa
Lam.
Diffuse knapweed
161
110
Observations
Asteraceae
Centaurea iberica
Trevir. ex Spreng.
Iberian knapweed
51
35
Observations
Asteraceae
Centaurea macrocephala
Muss.Puschk. ex Willd.
Giant knapweed
432
341
Observations
Asteraceae
Centaurea melitensis
L.
Maltese starthistle
738
519
Observations
Asteraceae
Centaurea solstitialis
L.
Yellow starthistle
1,220
886
Observations
Asteraceae
Centaurea stoebe
Tausch
Spotted knapweed
73
49
Observations
Asteraceae
Centratherum punctatum
Cass.
Lark daisy
495
390
Observations
Asteraceae
Chondrilla juncea
L.
Rush skeletonweed
1,864
1,203
Observations
Asteraceae
Chromolaena odorata
(L.) R.M.King & H.Rob.
Hagonoy
856
594
Observations
Asteraceae
Chrysanthemoides monilifera
(L.) Norl.
LC
Least Concern
Boneseed
75
48
Observations
Asteraceae
Cichorium endivia
L.
Endive Chicory
8,230
6,897
Observations
Asteraceae
Cirsium arvense
(L.) Scop.
Field thistle
15,046
11,203
Observations
Asteraceae
Cirsium mexicanum
DC.
Mexican thistle
27
12
Observations
Asteraceae
Cirsium vulgare
(Savi) Ten.
Spear Thistle
19,214
14,563
Observations
Asteraceae
Conyza bonariensis
(L.) Cronquist
Asthmaweed
486
318
Observations
Asteraceae
Conyza canadensis
(L.) Cronquist
Canadian horseweed
3,583
2,702
Observations
Asteraceae
Cosmos caudatus
Kunth
Cosmos
807
682
Observations
Asteraceae
Cosmos sulphureus
Cav.
Orange cosmos
3,838
3,235
Observations
Asteraceae
Crassocephalum crepidioides
(Benth.) S.Moore
Redflower ragleaf
305
222
Observations
Asteraceae
Crupina vulgaris
Pers. ex Cass.
Bearded creeper
83
42
Observations
Asteraceae
Cyanthillium cinereum
(L.) H.Rob.
Little ironweed
714
464
Observations
Asteraceae
Cynara cardunculus
L.
Cardoon
6,233
4,767
Observations
Asteraceae
Dahlia imperialis
Roezl ex Ortgies
NT
Near Threatened
Bell tree dahlia
263
211
Observations
Asteraceae
Delairea odorata
Lem.
Cape ivy
693
583
Observations
Asteraceae
Eclipta prostrata
(L.) L.
LC
Least Concern
Bhringaraj
1,223
905
Observations
Asteraceae
Elephantopus mollis
Kunth
Elephant's foot
225
131
Observations
Asteraceae
Emilia fosbergii
Nicolson
Florida tassel-flower
613
462
Observations
Asteraceae
Emilia sonchifolia
(L.) DC.
Red tasselflower
356
225
Observations
Asteraceae
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Species