Strophostyles

About

Strophostyles is monophyletic three-species genus of flowering plants in the family Fabaceae, subfamily Faboideae. Common names for the genus include wild bean and fuzzybean. It consists of annual and perennial herbaceous vines, ranging in their native distribution from Nevada, east to Florida, and north to the Great Lakes and eastern Canada. The etymology of the name is strophe (turning) + stylos (style), referring to the curve of the style within the keel petal.

Summary from Wikipedia