476 PORTVLACACEAE 



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. 



Loes Middle Tule River, Purpus 1806; Alta Mdws., K. Brandcgcf ; Mt. Silliman, Jepson 



756- Pine Eidge, Fresno Co., Ball cj- Chandler 124; Yosemite Park, Jepson 4370 (Eagle Peak), 

 S-'si (Vogelsang Pass), 3329 (Mt. Lvcll, sepals not glandular), 3381 (Rodgers Creek); Lake 

 Eleanor, Chesnut <)■ Dreir : Donner Lake, Davy 3203; Lassen Peak, Jepson 4098; Medicine 

 Lake, M. S. Baker; ridge above Cudaliay Valley, w. Siskiyou, Jepson 2S.53a; South Yollo 

 BoUy, Jepson. 



Refs— Lewisia triphylla Rob. in Gray, Syn. Fl. 1": 269 (1897). Claytonia triphylla Wats. 

 Proe Am. Aead. 10: 34.5 (1875), type loc. northern Sierra Nevada. Oreobroma triphylla How- 

 ell, Ervth'ea, 1: 33 (1893). 



Fig. 9.5. a. Lewisia triphylla Rob. The leaves are nearly as often two as three. 

 b, Lewisia nevadensis Rob. x 1. 



2. L, pygmaea Roh. 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 River, Mary Haskell; Mineral King, T. Brandegee ; Mt. Silliman, 

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

 3191. 



