Plate XL VII. Fig. i.—Typical shadscale vegetation, consisting of a nearly pure 
stand of Atrip lex confertifolia, showing much dead wood, as is 
usually the case, but the stand is denser than in much of the area 
occupied by this association. 
Fig. 2.—Transition area between the shadscale and the grease wood- 
shadscale types of vegetation. Scattered (larger and darker col¬ 
ored) plants of greasewood (Sarcobatus vermiculatus) in an area 
occupied chiefly by shadscale. 
Fig. 3.—Salt grass (Distichlis spicata) covering the whole of the 
depression to the right with the exception of a colony of Allenrolfea 
in the middle distance. The higher land to the left is occupied by 
greasewood (very dark in the illustration) and shadscale. 
