302 University of California Publications in Botany [Vol.9 



Specimens examined. — Black Butte, Sierra Buttes, Rattan 37 ; 

 Gold Lake, Sierra County, 6,400 feet. Hall and Babcock 4510; high 

 mountain near Donner Pass, Torrey in 1865 ; Mt. Rose, 9,650 feet, 

 Heller 9910a; Pyramid Peak, 8-10,000 feet, W. S. Atkinson in 1900; 

 Angora Peak, Tahoe, 7,700 feet, sandy slopes. Smiley 47 ; Lake of the 

 Woods, Tahoe, 7,850 feet, McGregor 41 ; trail to Mt. Tallac, 9,000 feet, 

 Abrams 4839 ; Silver Lake, Amador Count}', 8,000 feet, Hansen 499 ; 

 Mono Pass, at 7,000 feet and upwards. Brewer 1719 ; summits near 

 Carson Pass, 10,000 feet. Brewer 2117 ; Sentinel Dome, Yosemite, 

 Dudley, June 11, 1894 ; Tioga Road, Yosemite, dry gravel, 9,000 feet, 

 R. A. Ware 2611c; Mt. Dana, 10,400 feet, Smiley 716; Mt. Gibbs, 

 10,200 feet. Smiley 766 ; Mt. Goddard, 11,500 feet. Hall and Chand- 

 ler 703; Mt. Lyell, 10,500 feet. Hall and Babcock 3566; region of 

 Dinkey Creek, Fresno County, 8,900 feet, Hall and Chandler 376; 

 Mt. Raymond, Madera County, 8,700 feet, Smiley 549. 



Our form appears to be all of the variety ; the species occurs in the 

 Arid Transition and Upper Sonoran to the north and east of the 

 Sierra and perhaps in the foothills of the range (compare Miss C. E. 

 Cummings, May 5, 1896, collected at Raymond (Madera County?), 

 900 feet). 



No collections of var. diffusa have been seen by me from the moun- 

 tains south of Fresno County, but Miss Eastwood reports P. Douglasii 

 from Bullfrog Lake, in the high mountains of Tulare County; it is 

 probable that it is similar to the forms here referred to the variety. 



2. GILIA 



Upper leaves alternate. 

 Small annuals. 



Leaves mostly entire, the upper cauline reduced or bractlike. 



Flowers large (%-% inch long), on slender naked pedicels, the corolla 



dark purple 1. G. leptalea 



Flowers small (^/4-% inch long), on short pedicels; corolla white or rarely 



colored 2. G. capillaris 



Woody biennials or perennials. 



Plants tall (1-4 feet), biennial: leaves deeply pinnatifid: inflorescence 



thyrsoid-paniculate, the flowers red or yellow 3. G. aggregata 



Plants very depressed and mat-like. 



Perennial with leaves palmately deeply parted, the divisions acerose; 



flowers solitary', white or pinkish 4. G. pungens 



Biennial with leaves palmately parted, the divisions short ovate and 



mucronate; flowers in dense glomerate cymes 5. G. congesta 



Leaves all opposite or apparently whorled. 



Annuals with stems simple above; flowers purple. 



Cells of ovary several-many ovuled; stems becoming 10-15 inches high; 

 leaves divided into 5-7 acerose rigid divisions; bracts similar and 



hispid 6. G. cillata 



Cell of ovary 1-ovuled; stems much shorter, rarely attaining 5 inches; outer 



bracts oblanceolate 7. G. tularensis 



Perennial plants with many stems rising from the base; flowers white 



8. G. NuttaUii 



