APPENDIX 377 



ing, thorny tree, up to 20 feet high, found singly or in thickets. 

 Leaves of many leaflets, resembling small leaves of the pepper- 

 tree: flowers yellowish "spikes " (like pussy-willows) ; fruit long, 

 narrow pods, in clusters. Blooms in late spring. 



Prosopis pubescens. Screwbean mesquit: Span., Tornillo. A 

 smaller and slenderer tree than the foregoing, favoring alkaline 

 soil. Leaves and flowers similar to the above, but somewhat 

 smaller: fruit twisted pods, like screws, in clusters. Blooms in 

 late spring. 



Prunus eriogyna. Wild apricot. A large, branching, thorny bush, 

 up to 8 feet high, found in some desert canons. Leaves small, 

 bright light green; flowers numerous, white, like small plum 

 blossoms : fruit reddish yellow when ripe, with a small quantity 

 of sweetish pulp. Blooms in early spring. 



Psathyrotes ramosissima. A low, compact, rounded plant with 

 light-gray leaves and small, yellow flowers. Blooms in late 

 spring. 



Purshia tridentata. Bitter-brush. A strong, woody bush 5 or 6 

 feet high, with a casual resemblance to the common creosote 

 bush (Larrea) but rare. Flowers bright yellow. Blooms in late 

 spring. 



Rhus ovata. Sumac: Span., Mangla. A large, compact, roundish 

 bush or small tree, native to coast regions, but sometimes 

 found in or near desert cafions. Leaves dark bright green, 

 glossy, suggesting those of the laurel: flowers white or pink, 

 profuse, in very close clusters: fruit a reddish sticky berry. 

 Blooms in late spring. 



Salazaria mexicana. Bladder bush. A roundish bush, up to 3 feet 

 high, rather rare. Leaves few and small, gray: flowers showy, 

 white and purple; the calyces become inflated and look like 

 little round bladders. Blooms in early summer. 



Salvia carduacea. Thistle sage. A thistly-looking plant a foot or 

 so high, with large prickly grayish leaves and handsome light 

 purple flowers in round-headed clusters. Blooms in late spring. 



Salvia columbarieae. Span., Chia. A small plant a foot or so high, 

 usually with a single stiff stem rising from a few deeply-cut 

 leaves and bearing one or more clusters of small purple flowers 

 closely grouped in rings. Blooms in mid-spring. 



Sesbania macrocarpa. Wild hemp. A straight, slender, spindling 

 plant, up to 8 feet high, found in damp ground in Imperial 



