238 University of California Publications in Botany [Vol. 9 



This is the commonest species in the wet meadows of the high 

 mountains and one of the most conspicuous plants by reason of its 

 brilliant yellow flowers. 



10. Potentilla Grayi Wats., Proc. Am. Acad., vol. 8, p. 560. 1873. 



Type locality. — " Yosemite Valley {Bolander; Gray) ; Lake Tenaya 

 (Brewer)." 



Ramge. — Central Sierra Nevada. 



Zone. — Canadian and Hudsonian. 



Specimens examined. — ^Westf all's meadows, above Yosemite, 8,000 

 feet, Bolander 4971; Peregoy's, above Yosemite, A. Gray in 1872; 

 Lake Tenaya, 8,327 feet. Brewer 1685 ; Crescent Lake, Mariposa 

 County, Congdon, August 13, 1895 ; Elizabeth Lake meadow, above 

 Tuolumne meadows, 9,800 feet. Smiley 796 ; meadows near Black 

 Mountain, Fresno Count}^ 10,000 feet, Hall and Chandler 615 ; peaks 

 of the Sierra above Owens Lake, 10,000 feet, A. Kellogg in 1873. 



11. Potentilla glandulosa Lindl. var. nevadensis Wats., Bot. Calif., 



vol. 1, p. 178. 1876. 



Drymoc-allis glandulosa nwnticola Rydb., Mem. Dept. Bot. Columbia Univ., 

 vol. 2, p. 199. 1898. N. Am. Fl., vol. 22, p. 370. 1908, as species. 



Type locality. — "In the Sierra Nevada from the South Fork of 

 Kern River (Rothrock) to Oregon." 



Range. — Sierran region extending to the mountains of northern 

 and southern California. Northern Coast Ranges (Lake County). 



Zone. — Transition and above. 



Specimens examinecl. — Gold Lake, Sierra County, 6,400 feet, Hall 

 and Babcock 4499 ; Silver Lake, Amador County, 7,200 feet, E. Mulli- 

 ken 153 ; Heather Lake, Tahoe, 8,100 feet. Smiley 287 ; north side of 

 Angora Peak, Tahoe, 7,600 feet. Smiley 17a; Mt. Tallac, Tahoe, 9,600 

 feet, Hall and Chandler 4623 ; same locality, 9,500 feet. Smiley 236 ; 

 Mt. Goddard, 11,100 feet, Hall and Chandler 682* ; Mt. Gibbs, 11,000 

 feet, Smiley 774*; Tuolumne meadows, Yosemite, foot of Lambert's 

 Dome, 8,500 feet, Smilej^ 825 ; Monarch Lake, Tulare County, 11- 

 12,000 feet, Dudley 1610*; Farewell Gap, rocky places, 10-11,000 

 feet, Purpus 2073*. 



* These forms of the highest mountains constitute Drf/mocallis monticoJa, an 

 alpine reduced state of the variety incapable of precise definition. 



