Catclaw Acacia

Senegalia greggii (A. Gray) Britton & Rose
Acacia Greggii A. Gray, PI. Wright. 1: 65. 1852.
Acacia Durandiana Buckley, Proc. Acad. Phila. 1861: 453. 1861.
A shrub or small tree, the twigs glabrous or pubescent, more or less prickly. Pinnae 1-3 pairs; leaflets 3-7 pairs, obovate to narrowly oblong, usually pale, obtuse, 4-6 mm. long; racemes spike-like, 2-2.5 cm. long; legume 5-7.5 cm. long, about 15 mm. wide, glabrous or tomentose, thin, the apex rounded, the base usually narrowed.
Type locality: Patos, Chihuahua.
Distribution: Texas to Nevada, CaUfornia, Chihuahua, Sonera and Lower California.