170 University of California Publications in Botany [VOL. 9 



Red Mountain Lake, near Black Mountain, Fresno County, 9,700 feet, 

 Hall and Chandler 734; Round meadow, Fresno County, 7,000 feet, 

 Smiley 577; Coyote Creek, Tulare County, Culbertson (B 4391) ; 

 Glacier Point, Yosemite, 7,200 feet, Hall 9151. 



The type species, P. Douglasii Greene (I.e., p. 125), occurs in the 

 Transition zone in the drier meadows. 



5. Polygonum shastense Brewer, in Gray, Proc. Am. Acad., vol. 



8, p. 400. 1872. 



Type locality. ' ' Sierra Nevada in exposed places on dry ashy soil, 

 Mt. Shasta to Carson Pass." 



Range. Sierra Nevada. 



Zone. Arctic-alpine and occasionally in the Hudsonian. 



Specimens examined. Webber and Castle Peaks, Lemmon 1201 ; 

 high mountain near Donner Pass, Torrey 425; Mt. Stanford (Castle 

 Peak), Sonne, July 26, 1886; Tinker's Knob, Tahoe, 9,500 feet, Sonne, 

 August 23, 1885 ; Pyramid Peak, 9,200 feet, Hall and Chandler 4744 ; 

 Mt. Rose, 10,000 feet, Kennedy 1137 ; ridge above Donner Pass, 8,500 

 feet, Heller 7151; Wood's Peak, 9,000 feet, Brewer 2111; slope above 

 Desolation Valley on trail to Heather Lake, Tahoe, 8,800 feet, Smiley 

 336; Mt. Goddard, 11,100 feet, Hall and Chandler 684; Mt. Gibbs, 

 Yosemite, 10,900 feet, Smiley 771 ; Long meadow, Tuolumne County, 

 Chesnut and Drew, July 14, 1889; Mt. Silliman, Tulare County,. 

 Mrs. Brandegee, August 21, 1905. 



6. Polygonum bistortoides Pursh., FL, vol. 1, p. 271. 1814. 



P. glastifolium Greene, Pitt., vol. 5, p. 199. 1903. 



P. ceplialophorum Greene, La, p. 198. 1903. 



Bistorta leptopliylla Greene, Leaflets, vol. 1, p. 20. 1904. 



Bistorta scaberula Greene, I.e., p. 77. 1904. 



Type locality. "In low grounds on the banks of the Missouri, 

 called Quamash-flats. " (Collected in Idaho.) 



Range. In western North America from the subarctic regions 

 south to California, Arizona, and New Mexico. 



Zone. Canadian and in dwarfed forms to above timber line. 



Specimens examined. Pyramid Peak, 8-9,000 feet, Brewer 2137 ; 

 Caple's Lakes, 8,500 feet, Hanson 315; Marlette Lake, east of Lake 

 Tahoe, 8,000 feet, Hall and Chandler 4581 ; Lake of the Woods meadow, 

 Tahoe, 8,000 feet, Smiley 48 ; Tenaya trail from Snow Creek, Yosem- 

 ite, 7,600 feet, Smiley 671; near Porcupine Flat, Mariposa County, 

 8,000 feet, R. A. Ware 2620c; Upper Tuolumne River, 8-9,000 feet, 



