Feb. 16, 1914 
Indicator Significance of Vegetation 
417 
The presence of the grass-flat (Sporobolus, Distichlis, Chrysothamnus) 
vegetation indicates a soil which has a high moisture capacity, is more 
or less saline, and is moist to the surface during a great part of the year. 
Such land produces a coarse natural pasturage, but is not suitable for 
crop production unless it is drained. 
The salt-flat (Allenrolfea, Salicornia) vegetation occupies land which 
is extremely saline and is wet to the surface during a great part of the 
year. This type of land is not adapted to crop production. 
The correlations above outlined are yet known to apply only in Tooele 
Valley. Further investigation is needed in order to establish their 
applicability in the classification of agricultural land in other parts of 
the Great Basin. 
