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932 gentians, dogbanes, madders, and allies species
Mitragyna inermis
Gentiana triflora
Gentianella aurea
Psychotria mariana
Cerbera floribunda
Schenkia sebaeoides
Galium corymbosum
Swertia obtusa
Ixora triantha
Huernia macrocarpa
Asclepias macropus
Cynanchum thesioides
Lamprothamnus zanguebaricus
Damnacanthus indicus
Orthosia scoparia
Psychotria manillensis
Spermacoce ocymifolia
Ixora parviflora
Cinchona calisaya
Ladenbergia oblongifolia
Morinda officinalis
Ophiorrhiza mungos
Emmenopterys henryi
Oxypetalum coccineum
Swertia speciosa
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