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932 gentians, dogbanes, madders, and allies species
Psychotria hathewayi
Psychotria hexandra
Psychotria hobdyi
Psychotria wawrae
Psychotria mariniana
Psychotria punctata
Psychotria tenuifolia
Richardia brasiliensis
Richardia humistrata
Sabatia formosa
Sabatia dodecandra
Sabatia macrophylla
Spermacoce densiflora
Spermacoce floridana
Spermacoce tenuior
Spermacoce tetraquetra
Spigelia loganioides
Wrightia arborea
Exacum affine
Funtumia elastica
Calotropis gigantea
Geniostoma hedyosmifolium
Geniostoma kaalae
Geniostoma tinifolium
Geniostoma waialealae
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