Orbexilum


Orbexilum, commonly called leather-root, is a genus of flowering plants in the legume family. They are native to North America, where they are found in the United States and Mexico, south to Chiapas.
This genus can be distinguished from other genera in the Psoraleeae by its "thick glabrous pod walls that are distinctively rugose and by calyx that is scarcely accrescent."

Taxonomy

The genus was described by Constantine Samuel Rafinesque in 1832, with the type species O. latifolia, moved from Psoralea. Rafinesque differentiated Orbexilum from Psoralea largely on the basis of features of the calyx.

Species

Orbexilum comprises the following species:Orbexilum chiapasanum B.L.TurnerOrbexilum lupinellus Isely