280 University of California Publications in Botany [Vol. 9 



Specimens examined. — Mt. Rose, 10,000 feet, Kennedy 1151 ; about 

 Marlette Lake, east of Lake Tahoe, 2,460 m., Baker 1490 ; Mt. Stanford 

 (Castle Peak), Hooker and Gray in 1877; Silver Lake, Amador 

 County, 8,000 feet, Hansen 901; same locality, 7,200 feet, E. Mulli- 

 ken 149; Ebbett's Pass, Alpine County, 8,500 feet. Brewer 2082; 

 Ostrander's, above Yosemite, 8,000 feet, Bolander 6341; Tioga Road, 

 Yosemite, Congdon, August 29, 1895; Farewell Gap, Tulare County, 

 R. Hopping 79; Alta meadows, Tulare County, Mrs. Brandegee, 

 August 8, 1905. 



9. PTERYXIA 



1. Pteryxia calif ornica Coult. and Rose, Contr. Nat. Herb., vol. 7, 

 p. 172. 1900. 



Type locality. — "Sisson, Siskiyou County, Cal." 



Range. — Mountains of northern California (southern Oregon?) 

 south in the Sierra Nevada to Tulare County. 



Zone. — Transition and Canadian. 



Specimens examined. — Sierra County, Lemmon 985 ; Cisco, Bolan- 

 der in 1872 ; near Castle Peak, Heller 7070 ; Summit, Kellogg ; Heather 

 Lake, Tahoe, 7,800 feet, McGregor 183 ; Desolation Valley, Tahoe, 

 8,600 feet, dry sandy places, Smiley 97 ; Ebbett 's Pass, Alpine County, 

 dry hills, 9,000 feet. Brewer 1988 ; Tuolumne meadows, Yosemite, dry 

 gravel, 8,600 feet, R. A. Ware 2681c ; same locality, dry rocky ground, 

 8,500 feet. Smiley 706; Cloud's Rest, A. Gray in 1872; Crescent Lake, 

 Mariposa County, Congdon, August 14 (without year) ; Collins' 

 meadows, Fresno County, 7,500 feet. Hall and Chandler 541 ; Mineral 

 King, Coville and Funston 1392 ; Alta meadows, Tulare County, Mrs. 

 Brandegee, August 5, 1905; Farewell Gap, 10,600 feet, Purpus 5255; 

 same locality, 10,400 feet. Hall and Babcock 5664. 



The two specimens last cited present a form differing from the 

 normal by broader leaf segments, which are abruptly acuminate and 

 mucronate, and by reduced size of the whole plant, the two stations 

 are both arctic-alpine and these slight changes of character probably 

 represent the reaction of the species to the alpine habitat. 



10. DRUDEOPHYTUM 



Sterile rays of the umbel short (about % inch long) and stout; fruit small 



_ 1. D. dementis 



Sterile rays of the umbel long (about % inch long) and slender; fruit larger 

 2. D. vestitum 



