THE BROAD-SCLEROPHYLL VEGETATION OF CALIFORNIA. 119 



58. Ceanothus parvifolius (Wats.) Trelease. Central and southern Sierras; conifer-forest 

 chaparral. Deciduous. 



59. Ceanothus pinetorum Coville (including C. jepsonii Greene). Coast Ranges; Lake 

 County to Mount Tamalpais; also in the southern Sierras (Tulare County). 



60. Ceanothus prostratus Benth. Squaw carpet; mahala mats. North Coast Ranges, 

 Mount Shasta to the San Francisco Bay region; pine belt of the Sierra Nevada. Habit 

 and habitat of C. diver sifolius, except that toward its southern limit in the Coast Ranges it 

 tends to become erect (var. divergent K. Brandegee) . 



61. Ceanothus rigidus Nutt. Limited in range; Marin County to Monterey. (See No. 

 56.) 



62. Ceanothus sanguineus Pursh. A northern species reaching the Siskiyou Mountains 

 in northern California; conifer-forest chaparral. Deciduous. 



63. Ceanothus sorediatus H. and A. Coast Ranges; Napa and Solano Counties to north- 

 ern Santa Barbara County. Somewhat like C. cuneatus in its habits, but preferring more 

 mesophytic situations; coming up thickly like C. thyrsiflorus after fire in the redwood 

 forest. 



64. Ceanothus spinosus Nutt. Coast region of southern California from Santa Barbara 

 County to Orange County. One of the largest members of the genus, sometimes arbor- 

 escent. Partly evergreen. 



65. Ceanothus thyrsiflorus Esch. Blue-blossom; California lilac. An abundant spe- 

 cies of the redwood region from the northern boundary of the State to the Santa Lucia 

 Mountains; temporary, forming dense thickets after fires. 



66. Ceanothus tomentosus Parry. Sierras (Amador County) southward to the San 

 Bernardino Mountains and San Diego. 



67. Ceanothus velutinus Dougl. British Columbia to California; south in the Coast 

 Ranges to Marin County, and in the Sierras to Kern County; eastward to the Rocky Moun- 

 tains. A very important species of the conifer-forest chaparral, with its companions form- 

 ing forest undergrowth as well. 



68. Ceanothus verrucosus Nutt. Vicinity of San Diego, southward into northern Lower 

 California. 



CORNACE.E. 



69. Garrya elliptica Dougl. Quinine bush. Coast Ranges from Oregon to the Santa 

 Lucia Mountains. Usually present in small number in the climax chaparral; seldom abun- 

 dant. 



70. Garrya fremontii Torr. Inner Coast Ranges and Sierra Nevada to San Jacinto 

 Mountains. More closely identified with the conifer forest than with the climax chaparral. 



ERICACEAE. 



71. Comarostaphylis diversifolia (Parry) Greene. Southern California and northern 

 Lower California. Representative of a genus almost entirely Mexican and Central Amer- 

 ican. 



72. Xylococcus bicolor Nutt. Near the coast; San Diego County and northern Lower 

 California. A rather important climax species within its limited range. 



73. Arctostaphylos andersonii A. Gray. Manzanita. 1 Of local distribution; Oakland 

 Hills and Santa Cruz Mountains. 



74. Arctostaphylos drupacea (Parry) n. comb. [A. pringlei var. drupacea Parry: Uva- 

 ursi drupacea (Parry) Abrams]. San Bernardino Mountains to northern Lower California. 

 Belongs to the forest region of the higher mountains. 



75. Arctostaphylos glauca Lindl. From the San Francisco Bay region and Stanislaus 

 County to Mount San Pedro Martir in Lower California. One of the most characteristic 

 and conspicuous members of the climax chaparral of the southern half of the State. Gen- 

 erally scattered among other shrubs, often Adenostoma, and standing out conspicuously 

 by reason of its large size, smooth rounded form, and light gray foliage. Probably attains 

 a larger size than any other species of manzanita. 



76. Arcloslaphrjlos liookeri Don. Near the coast, from San Francisco to San Luis 

 Obispo County; in the Monterey region growing with other species of restricted range. 

 (See No. 56.) 



'The name "Manzanita" is applied to all the species indiscriminately; also to the closely 

 related Nos. 71 and 72. 



