1921] Smiley: Flora of the Sierra Nevada of California 263 



36. EHAMNACEAE (Buckthorn Family) 

 1. CEANOTHUS 



Leaves 1-3 inches long, 1/^-2.5 inches broad, deep green and shining-glutinous 

 above, pale and minutely pubescent below; large shrub with ascending 

 green branches 1. C. velutinus 



Leaves %-1.5 inches long, ^^4-1 inch broad, more or less cordate at base; 

 depressed shrub forming broad mats; branches light gray ..2. C. cordulatus 



1. Ceanothus velutinus Dougl. in Hook., Fl. Bor. Am., vol. 1, p. 



125. 1830. 



Type locality. — ' ' Subalpine hills near the source of the Columbia ; 

 and at the Kettle Falls." 



Range. — Washington to California, east to Colorado and Black 

 Hills. 



Zone. — Transition and Canadian. 



Specimens eoMmined. — Donner, Placer County, Brandegee, July, 

 1889 ; upper end of Donner Lake, Heller 6968 ; lateral moraine south 

 of Fallen Leaf Lake, 6,800 feet, Abrams 4792; Angora Peak, Tahoe, 

 7,000 feet. Smiley 24a ; Mt. Tallac, east side in slide rock, 8,000 feet. 

 Smiley 242; Sonora Pass, 8-9,000 feet, Brewer 1877; Kern Canon, 

 Tulare County, 9,000 feet, H. M. and G. R. Hall 3455. 



2. Ceanothus cordulatus Kellogg, Proc. Calif. Acad., vol. 2, p. 



124. 1861. 



Type locality. — ''Brought by Dr. J. A. Veatch from Washoe." 



Range. — Mountains of northern California, and southern Oregon, 

 south through the Sierra Nevada to southern California. 



Zone. — Upper Transition and Canadian. 



Spccimiens examined. — Plumas County, Mrs. Austin ; Fallen Leaf 

 Lake, Tahoe, growing almost flat upon the ground. Miss Lathrop, 

 July 12, 1909 ; Mt. Tallac, 8,100 feet, Smiley 241 ; Angora Peak, 7,800 

 feet, Smiley 43 ; Grass Lake, Tahoe, McGregor 87 ; Mt. Tallac, near 

 top of talus slope on east side, forming part of a large mat 9 feet 

 across. Smiley 243 ; Tuolumne meadows, prostrate and spreading on 

 exposed ledges, 8,700 feet, R. A. Ware 2644c; near Sonora Pass, com- 

 mon and spreading on the ground, Brewer 1926 ; between Lake Tenaya 

 and Tuolumne meadows, 8,300 feet. Smiley 704; Cloud's Rest trail, 

 7,200 feet. Smiley 519 ; ridge above Round meadow, Fresno County, 

 7,800 feet. Smiley 591; Mt. Olancha, Tulare County, 8-10,000 feet, 

 Rothrock 354. 



