Southeastern Washington and Adjacent Idaho, 



125 



FIG. 34. Heracleum lanatum and Crataegus brevispina in a wet meadow. 



FIG. 35. A view of the flood-plain trees along Rock Creek in western 

 Whitman County. The chief trees are Betula microphylla, Crataegus brevi- 

 spina, and species of Salix. 



