86 University of California Publications in Botany [Vol. 9 



September 1, 1894; Slide Mountain, Waslioe County, Nevada, 7,500 

 feet, Heller 10666 ; Onion Valley, Plumas County, Rutter and Atkin- 

 son, September 1, 1899; Sentinel Dome Trail, Yosemite, Dudley, 

 June 11, 1894; Glacier Point, J. W. Congdon, May, 1888; Mt. Ray- 

 mond, 7,600 feet, Smiley 527; Fresno Dome meadows, 8,000 feet, 

 Smiley 550 ; top of Kettle Mountain ridge, Dudley, August 23, 1904. 



The Red Fir forms large, nearly pure stands on the western flank 

 of the Sierra ; on the eastern side it occurs locally in the Tahoe region. 

 Besides the typical form, there is a variety with exserted bracts — var. 

 shastensis Lemmon (3rd Rep. Calif. Board Forestry, p. 145. 1890) — 

 described from the Shasta district but found sporadically throughout 

 the range of the species. Lemmon also described (I.e.) a yellow coned 

 variety, var. xanthooarpa, as distinct from the common form with 

 purplish-brown cones. 



Abies concolor Lindl. and Gorden (Jour. Hort. Soc. Lond., vol. 5, 

 p. 210. 1850), the common White Fir, growing on all the mountains 

 of California and extending east to Colorado, not infrequently occurs 

 above the Transition zone in the Sierra but has its greatest develop- 

 ment in that zone. 



4. JUNIPERUS 



Leaves opposite and appressed 1. J. occidentalis 



Leaves in whorls and diverging 2. J. communis 



1. Juniperus occidentalis Hook., Fl. Bor. Am., vol. 2, p. 166. 

 1839. 



Type locality. — "N.W. America. Banks of the waters in the 

 Rocky Mountains. Lewis (in Ph.). Common on the higher parts of 

 the Columbia, at the base of the Rocky Llountains, where it attains 

 a height of 60-80 feet, and a diameter of from 2-3 feet. Douglas.^' 



Range. — Southeast Washington and Idaho south in the Cascades 

 and Sierra Nevada to the San Jacinto Mountains of southern Cali- 

 fornia. 



Zone. — Canadian and Hudsonian. 



Specimens examined. — Sierra Valley, Dudley, August, 1909 ; Mt. 

 Stanford (now called Castle Peak), Hooker and Gray in 1877; between 

 Donner Lake and Summit, Dudley, June, 1900 ; above Douner Lake 

 toward Donner Pass, Heller 7166; Sierra near Summit Valley, 7,000 

 feet, Pringle, September 19, 1882 ; Mt. Tallac, Dudley, July 9, 1893 ; 

 Glen Alpine, W. W. Price, August, 1898; Suzy Lake, McGregor 112; 



