544 



SOILS. 



or sulfate of soda, sometimes with considerable proportion of 

 epsom salt, forms a variable proportion of the total. 



Greasew'ood is distinctly a plant of the Great Basin, only 

 reaching California in the adjacent counties of Lassen, Alpine, 

 Mono, and northern Inyo. It is very abundant on the lower 

 levels of Honey Lake valley, Cal. 



The Sarcobatus is chiefly found on silty or sandy soils of 

 good native fertility (see page 445, chapter 22), so that when 

 its excess of salsoda is neutralized by means of gypsum, the 

 land becomes very productive. Unfortunately the cost of the 

 amount of gypsum required to render such soils adapted to the 

 tolerance of most culture plants is often prohibitive; but 

 where the correction of only small spots is called for, the 

 " white alkali " resulting from the gypsum treatment would 

 be tolerated by many culture plants. 



ALKALI-HEATH (Frankcnia grandifolia campestris Gray) ; 

 Fig. 87. 



FlG. 87. Alkali-Heath Frankenia grandifolia campestris A Gray. 



Alkali-heath is perhaps the most widely distributed of any 

 of the California alkali plants. Its perennial, deep-rooting 



