476 



PORTULACACEAE 



Moist slopes or swales, in granite sand or fine gravel: Sierra Nevada and 

 North Coast Ranges, 6000 to 9600 feet. North to Washington and Idaho. 



L OCS . Middle Tule Biver, Purpus 1806; Alta Mdws., K. Brandegee; Mt. Silliman, Jepson 

 756; Pine Eidge, Fresno Co., Hall $ Chandler 124; Yosemite Park, Jepson 4370 (Eagle Peak), 

 3231 (Vogelsang Pass), 3329 (Mt. Lyell, sepals not glandular), 3381 (Eodgers Creek); Lake 

 Eleanor, Chesnut $ Drew; Donner Lake, Davy 3203; Lassen Peak, Jepson 4098; Medicine 

 Lake, M. S. Baker; ridge above Cudahay Valley, w. Siskiyou, Jepson 2853a; South Yollo 

 Bolly, Jepson. 



Refs. LEWISIA TRIPHYLLA Bob. in Gray, Syn. Fl. I 1 : 269 (1897). Claytonia triphylla Wats. 

 Proc. Am. Acad. 10: 345 (1875), type loc. northern Sierra Nevada. Oreobroma triphylla How- 

 ell, Erythea, 1: 33 (1893). 



a 



Fig. 95. a, LEWISIA TRIPHYLLA Rob. The leaves are nearly as often two as three. 

 &, LEWISIA NEVADENSIS Bob. x 1. 



2. L. pygmaea Rob. Scapes several to many, 1 to 2 inches high, these 

 and the leaves from a fleshy root; root elongated-fusiform, 3 to 6 lines thick; 

 leaves linear, slightly exceeding the flowers; scapes one-flowered with a pair 

 of ovate bracts above the middle, or umbellately 2-flowered and the pedicels 

 subtended by the bracts; sepals ovate, obtuse, glandular-denticulate; petals 

 white. 6 to 9, subequal or unequal, often notched on one side or at apex, 3 

 lines long ; stamens 5 to 8 ; styles 3 to 5 ; scapes soon retrocurved. 



Sierra Nevada, 8000 to 12,200 feet. North to Washington and east to the 

 Rocky Mts. 



Locs. Mt. Guyot, Kern Biver, Mary Haslcell; Mineral King, T. Brandegee; Mt. Silliman, 

 K. Brandegee; Mt. Lyell, Jepson 3329; Mt. Dana, Chesnut fy Drew; Bierstadt Peak, Davy 

 3191. 



