53 6 



ZONES AND REGIONS [Pt. Ill, Sect. II 



small leathery leaves with entire margins, or provided with sharp teeth ; 

 two evergreen trees of different affinity accompany them, the Californian 

 laurel (Umbellularia Californica, Nutt., Fig. 274) and the chinquapin 

 (Castanopsis chrysophylla, A. DC). The shrubs composing the main mass 

 of the vegetation, which forms a hardly penetrable thicket on the lower 



Fig. 302. Sclerophyllous flora of California. Primus ilicifolia, Walp. Natural size. 



After Sargent. 



mountains and hills (Fig. 299), consist, like the corresponding formations of 

 other sclerophyllous districts, of representatives of the most diverse families, 

 such as oaks (Fig. 300, 6), Compositae, Rosaceae (Adenostoma fasciculatum, 

 Hook, et Arn., Fig. 300, 2 ; Prunus ilicifolia, Walp., Fig. 302), Zygophyl- 

 laceae, Anacardiaceae (species of Rhus), Rhamnaceae (Ceanothus cuneatus, 

 Nutt., Fig. 300, 3 ; C. papillosus, Torr., Fig. 300, 4), Leguminosae, Hydro- 



