Figure 1. — Map of part of a plot (at top) showing shrub and weed crowns and bunahgrass 

 bases. Bar graph (below) shows weight of underground material in three 7. 5-cm. 

 depth -increments of the sample area indicated directly above on the map. A, Atriplex 

 confertifolia; E, Eurotia lanata; +, root crown or point of attachment of shrubs 

 and broadleaved herbs. No taproots were intercepted in this segment of the under- 

 ground sample. 



