Centrosema

Centrosema, the butterfly peas, is a genus of (mainly tropical) American vines in the legume family (Fabaceae). Species include: Lepidopteran caterpillars that feed on butterfly peas include the two-barred flasher (Astraptes fulgerator), occasionally recorded on C. macrocarpum and C. plumieri at least. Another plant referred to as butterfly pea from the same subtribe Clitoriinae is the related Clitoria ternatea. However it doesn't belong to the genus Centrosema.