370 University of California Publications in Botany [VOL. 9 



4. Erigeron Coulter! Porter, in Porter and Coulter, Fl. Colo., p. 61. 

 1874. 



E. frondeus Greene, Fl. Fran., p. 388. 1897. 



Type locality. "Weston's Pass, at 10,000 feet altitude." 



Range. Rocky Mountains from Wyoming to New Mexico, west 

 to the Sierra Nevada. 



Zone. Canadian and rarely in the Hudsonian. 



Specimens examined. Near Summit, by a swift mountain stream, 

 Greene 420 ; upper end of Donner Lake, Heller 6964 ; Truckee River, 

 Heller, July 30, 1903; Half -Moon Lake, 7,760 feet, McGregor 57; 

 trail from Summit to Castle Peak, 7,800 feet, nearly glabrous, Smiley 

 464; Luther's Pass, Tahoe, 7,800 feet, Abrams 4761; Lake Valley, 

 Tahoe, 6,400 feet, Abrams 4767 ; Summit Soda Springs, Kennedy and 

 Doten 260; Carson Spur, Alpine County, 8,500 feet, Hansen 773; 

 Mono trail, 9,000 feet, Bolander 6010; vicinity of Lundy, Mono 

 County, 8-9,000 feet, Miss M. Minthorn 55; Lake Tenaya trail, 

 Yosemite, Congdon, August 14, 1894; Bloody Canon, Chesnut and 

 Drew, July 26, 1889; above Lake Tenaya, 8,300 feet, Smiley 869; 

 Crabtree meadows, Tulare County, 10,330 feet, H. M. and G. R. Hall 

 8443 ; meadows near Soda Creek, Tulare County, 8-9,000 feet, Purpus 

 5171; Sky Valley, Tulare County, Culbertson (B4575). 



This is the only white flowered Erigeron of wet meadows and 

 stream banks in the higher mountains. E. frondeus is merely the 

 larger size of the species; these taller plants are often somewhat 

 scabrous (Smiley 869 above). 



5. Erigeron caespitosus Nutt., Trans. Am. Phil. Soc. II, vol. 7, 

 p. 307. 1841. 



Type locality. ' ' On the summits of dry hills in the Rocky Moun- 

 tain range, on the Colorado of the West. ' ' 



Range. Alberta to New Mexico and westward to the mountains 

 of the Great Basin and east slope of the Sierra Nevada. 



Zone. Arid Transition mainly, rising into the Canadian. 



Specimens examined. Mono Pass, Congdon, no. 58, 1896; same 

 locality, 10,000 feet, R. A. Ware, 2723c; same locality, State Survey 

 6154 (as in University of California). 



