Misc. Pub. 303, U. S. Dept. of Agriculture 
PLATE 9 
A, Chrysofhamnm spp. A view in Grand Canyon National Park showing the characteristic growth habit of 
rabbitbrush. The species are of importance as cover for plains wildlife and of value to livestock. (Photo- 
graph by Department of the Interior.) B, Cissus arborea. The beautiful pepper-vine's ability to grow 
in the poor soils along railroad embankments and roadsides suggests its use in controlling erosion on high- 
way cuts. C, Crataegus brevispina. This important species for erosion control and wildlife plantings in 
the arid portions of the Northwest is distinctive in having blue-black fruit. The abundant crop, however, 
is characteristic of most hawthorns. 
