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932 gentians, dogbanes, madders, and allies species
Guettarda speciosa
Guettarda uruguensis
Timonius ledermannii
Nauclea xanthoxylon
Zeltnera abramsii
Spermacoce neoterminalis
Galium elongatum
Ochrosia mariannensis
Ixora masoalensis
Kadua cordata
Araujia odorata
Leptodermis oblonga
Periploca sepium
Asclepias scaposa
Zeltnera arizonica
Zeltnera trichantha
Galium johnstonii
Galium matthewsii
Galium munzii
Spigelia gentianoides
Ochrosia haleakalae
Hoya carnosa
Asclepias feayi
Houstonia serpyllifolia
Thyrsanthella difformis
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