406 University of California Publications in Botany [Vol. 9 



32. HIERACIUM 



Flowers yellow; pappus fuscous or sordid. 



Stems short (4-12 iuches high), numerous, leafy up to the cyme; pubescence 



of shaggy hairs; pappus fuscous 1. H. horridum 



Stems taller, scapose, the leaves radical; pappus sordid. 



Kadical leaves glabrous and green; heads small. 2. H. gracile var. detonsum 



Eadical leaves pilose; heads larger 3. H. cynoglossoides var. nudicaule 



Flowers white; stems tall (1-3 feet), branching in the open cyme; leaves oblong, 

 narrowing to a winged petiole; pappus whitish 4. H. albiflorum 



1. Hieracium horridum Fries, Epic. Hier., p. 154. 1862. 

 H. Brcweri Gray, Proc. Am. Acad., vol. 6, p. 553. 1865. 



Type locality. — "In montibus Calif orniae. " 



Range. — Mt. Shasta through the Sierra Nevada to the mountains 

 of southern California. 



Zone. — Transition to above timber line. 



Specimens examined. — Mt. Rose, 9,700 feet. Heller 10331 ; Half- 

 Moon Bay, Tahoe, Miss K. A. Chandler, August 21, 1901 ; Suzy Lake, 

 Tahoe, 7,650 feet, McGregor 111 ; Pyramid Peak, east side, 9,500 feet, 

 Smiley 126 ; Silver Mountain, Alpine County, 11,000 feet, Brewer 

 2048; Silver Valley, 7,350 feet, Brewer 1962; foot of Mt. Dana, 

 Bolander 6131 ; Eagle Peak, Yosemite, Chesnut and Drew, July 6, 

 1887 ; Wawona Point, Mariposa County, A. Gray in 1872 ; Kaiser 

 Crest, Fresno County, 9,600 feet. Smiley 648 ; Alta meadows, Tulare 

 County, Mrs. Brandegee, August 21, 1905 ; Mt. Guj'-ot, 11,500 feet, 

 H. M. and G. R. Hall 8424 ; mountains near Little Kern River, Tulare 

 County, 11-12,000 feet, Purpus 5141; Mt. Olancha, Tulare County, 

 10,400 feet, Rothrock 329 ; mountains near Kaweah River, Tulare 

 County, 9-10,000 feet, Purpus 5160. 



In alpine situations this plant becomes dwarfed and it is this state 

 that is represented by Brewer 1962, 2048; by Purpus 5141; and by 

 Hall 8424, which Dr. Gray described as H. Breweri. 



2. Hieracium gracile Hook. var. detonsum Gray, Syn. Fl., vol. 1, 



pt. 2, p. 427. 1884. 

 H. triste var. detonsum Gray, Bot. Calif., vol. 1, p. 441. 1876. 



Ttjpe locality.— ''Ehhett's Pass, Sierra Nevada, at 8,000 feet 

 (Brewer)." 



Range. — Sierra Nevada northward to the mountains of southern 

 Oregon and east to Colorado. JNIountains of British Columbia, ace. 

 Syn. Fl. 



Zone. — Canadian. 



