Rhamnus_betulifolia
Frangula betulifolia
Species of flowering plant
Frangula betulifolia, the birchleaf buckthorn, is a shrub or small tree in the buckthorn family, Rhamnaceae. It is native in northern Mexico in the Sierra Madre Occidental cordillera, and mountainous, desert regions of the Southwestern United States of Arizona, Utah, New Mexico, and far west Texas; besides being found in Sonora, Chihuahua and Durango of the Occidental cordillera, a large species locale occurs to the east in Nuevo León.[1]
Frangula betulifolia has large ovate leaves, and can grow to be a small tree from 3-10m tall. Blooms in spring, May–June, followed by black-purple fruits in fall. The inner bark was chewed by Native Americans for medicinal purposes.[2]
The former variety obovata with rounder leaves, occurring from southern Nevada through northern Arizona and southern Utah to southwestern Colorado, is now a separate species Frangula obovata.[3]