Pseudoziziphus

About

Pseudoziziphus is a genus of flowering plants in the buckthorn family, Rhamnaceae. It includes two species of shrubs native to North America.Pseudoziziphus celata (Judd & D.W.Hall) Hauenschild – Florida Pseudoziziphus parryi (Torr.) Hauenschild – southern California and Baja California

Summary from Wikipedia