Centrosema, the butterfly peas,[2] is a genus of (mainly tropical) American vines in the legume family (Fabaceae). It includes 44 species, which range through the tropical and warm-temperate Americas from the southern United States to northern Argentina. Species include:[1]
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.
In Jamaica, it is known as Fee Fee and is usually seen at Christmas time. The flower is able to make a whistling sound hence children usually find it useful as a toy.[citation needed]
Brower, Andrew V.Z. (2006): Problems with DNA barcodes for species delimitation: ‘ten species’ of Astraptes fulgerator reassessed (Lepidoptera: Hesperiidae). Systematics and Biodiversity4(2): 127–132. doi:10.1017/S147720000500191XPDF fulltext