COOPER 



PLATE 15 



^^fH(>tn»wi 



Rciimunl of cliaparral (Adenodoma consociation) on the floor of tlic Sacramento 

 Valley, in Colusa County, south of Arbuckle; Coast Range in the distance. 



Adenosioma consociation on east slope of north Coast Ranges: clearing and 

 secondary grassland with Pimis sabiniana and Quercus dnuglasii growing with 

 the latter; Pimm potideroaa on distant ridges. Beeguin, Tehama County. 



Hi innant of original chaparral cover on the .slope of an isolated mountain; sec- 

 ondary grassland, with abundant cattle trails; live oaks in ravines. Mount 

 Diatilo, Contra Costa Countv. 



