1921] Smiley: Flora of the Sierra Nevada of Calif ornia 95 



2. AgTOStis rossae Vasey, Contr. Nat. Herb., vol. 3, p. 76. 1892. 



A. varmns Trin., Mem. Acad. St. Petersb. VL, vol. 4, p. 314. 1840, not of 

 Thuill. 1790. Bot. Calif., vol. 2, p. 273. 1880. 



Type localit y.— -Yellowstone Park, Wj'oming. 



Range. — Pacific Coast from Alaska to California and east to 

 "Wj'oming. 



Zone. — Canadian, to Arctic-alpine. 



Specimens examined. — Mt. Rose, Kennedy 978 ; Summit Valley, 

 9,500 feet, Pringle, September 27, 1882; ridg-e south of Donner Pass, 

 7,500 feet. Heller 7140; Hermit Valley, Alpine County, 7,000 feet, 

 Hansen 397; Desolation Valley, 8,500 feet, Smiley 346a; Mt. Dana, 

 Bolander ; Upper Tuolumne River, 10,000 feet, Bolander 5070 ; soda 

 spring-s, Tuolumne meadows, Congdon, August 18, 1890 ; Dana Park 

 meadows, Yosemite, 9,700 feet, Smiley 850 ; soda springs of the San 

 Joaquin, Madera County, Congdon, August 20, 1895 ; meadows near 

 Black Mountain, Fresno County, 10,000 feet. Hall and Chandler 611. 



A. rossae is 'very near to A. exarata Trin., which is common in the 

 Sierra in the Transition zone and locally rises into the Canadian 

 (Mt. Raymond, drj^ meadow border, 7,900 feet, Smiley 539). 



3. AgTOStis hiemalis var. geminata Hitchc, U. S. Dept. Agr., 



Bur. PL Ind. Bull. 68, p. 44. 1905. 

 A. geminuta Trin., Gram. Unifl., p. 207. 1824. 



Type locality. —^^'EiS. Unalaschka. " 



Range. — Southeastern Alaska to California and Colorado and in 

 the north across the continent eastward to Newfoundland and eastern 

 Canada. 



Zone. — Canadian to Arctic-alpine. 



Specimens examined. — Donner Lake, Heller 7149 ; Kern River, 

 Rothrock 323. 



4. AgTOStis tenuis Vasey, Bull. Torr. Bot. Club., vol. 10, p. 21. 



1883. 

 A. idahoense Nash, Bull. Torr. Bot. Club, vol. 2.5, p. 42. 1897. 

 Type locality. — "On the San Bernardino Mountains, California." 

 Range. — Washington to California, east to Montana and New 

 Mexico. 



Zone. — Arid Transition and Canadian. 



Specimens examined. — South side of Slide ]\Iountain, Washoe 

 County, Nevada, 8,200 feet, Heller 10668; Desolation Valley, 8,500 



