MESA AND FOOTHILL VEGETATION 



41 



rock on the top of the mesa. The tree or rock, as the case may be, 

 furnishes shade for the young plant. 



Thimble Berry. Rubus deliciosus James. — This shrub is found in 

 both gulches, especially at the upper parts. Single plants are found on 

 the north slope and in the shade of the largest pine trees on the north crest. 



Fig. 5. — New Jersey Tea. Ceanothus fendleri A. Gray; C. pubescens (T. & G.) 

 Rydb. — Both species are about evenly distributed. They grow on east, southeast and 

 south crests of the mesa in very stony xerophytic habitats. None are found in the gulches, 

 on north exposures nor on the mesa top, except at the extreme east tip, which is very dry. 



June Berry. Amelanchieralnifolia Nutt. — This plant is not abundant. 

 It commonly occupies rather moist situations. 



Nine Bark. Opulaster ramaleyi A. Nels.; O. glabratus Rydb.; O. 

 monogynus (Torr.) Kuntze. — Of the three species represented, O. 

 glabratus and O. monogynus are the most common. They are found 



