Ceanothus pauciflorus

About

Ceanothus pauciflorus, known by the common name Mojave ceanothus, is a species of flowering shrub in the buckthorn family, Rhamnaceae. It is native to the Southwestern United States and Mexico, where it grows primarily in shrubland communities at moderate to high elevations. It is characterized by oppositely arranged leaves, corky stipules and white flowers. It was formerly known as Ceanothus greggii.

Summary from Wikipedia