542 



SOILS. 



1 : - ' - 



7'ornt,i>,,i, \\ . 



GRKASI WOOD (Sarcolhitus rcnniculutus i i h ink. Torr.) ; 

 . 86. 



This the true Greasewood of the desert region east of the 

 Sierra Nevada, and not either of the plants known under that 

 name in the San Joa<|uin Valley and in Southern California, 

 invariably indicates a heavy impregnation of the land with 

 Mack alkali or carbonate of v,,da. Since, a> before Mated, 

 black alkali is ni^t likely to occur in low Around, \ve fre- 

 quently fiii'l the true grea-ewond forming bright jjreen 

 patches in the swales, and on the benches of periodic streams, 

 as well as on the borders of alkali ponds or lakes. Stock un- 

 to it will frequently go to these patches on a run, 



