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World flora
Plants of the world flora
Explore
Families
Genera
33
Species
Family:
Rubiaceae
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Genera
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Observations count
Species count
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Descending
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Asperula
155
78
Observations
2
species
Bouvardia
181
166
Observations
1
species
Casasia
7
6
Observations
1
species
Cephalanthus
1,215
1,041
Observations
2
species
Chiococca
164
74
Observations
1
species
Coccocypselum
70
51
Observations
1
species
Crucianella
107
60
Observations
1
species
Cruciata
4,948
3,882
Observations
2
species
Diodia
423
304
Observations
3
species
Erithalis
57
40
Observations
1
species
Ernodea
52
17
Observations
1
species
Exostema
40
24
Observations
1
species
Galium
49,005
38,940
Observations
31
species
Guettarda
213
120
Observations
3
species
Hamelia
1,028
773
Observations
1
species
Houstonia
977
892
Observations
8
species
Ixora
4,288
3,591
Observations
2
species
Kelloggia
8
8
Observations
1
species
Mitchella
872
778
Observations
1
species
Mitracarpus
323
203
Observations
1
species
Morinda
1,827
1,303
Observations
2
species
Oldenlandia
444
290
Observations
1
species
Paederia
137
102
Observations
1
species
Pentas
2,806
2,344
Observations
1
species
Pentodon
4
1
Observation
1
species
Psychotria
305
194
Observations
2
species
Randia
60
34
Observations
1
species
Richardia
760
568
Observations
2
species
Rubia
840
541
Observations
1
species
Sherardia
3,775
2,790
Observations
1
species
Spermacoce
375
225
Observations
5
species
Stenaria
101
92
Observations
1
species
Strumpfia
10
8
Observations
1
species
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Genera