molecular evidence shows that Vincetoxicum is more closely related to Tylophora, now included in Vincetoxicum. The generic name means "poison-beater"...

turrubarensis W.C.Burger & Q.Jiménez Psychotria tutcheri Dunn Psychotria tylophora Kurz Psychotria uahukensis Lorence & W.L.Wagner Psychotria uapoensis Lorence...

Vincetoxicum sp. (as Tylophora sp.) Vincetoxicum fasciculatum (syn. Tylophora fasciculata) Vincetoxicum himalaicum (as Tylophora aff. himalaica) Vincetoxicum...