96 CRUCIFERAE 



Rcfs. — Draba lemmonii Wats. Bot. Cal. 2:430 (1880), type loc. summit of Mt. Lvoll, 

 13.000 ft., Lcminon ; .Icpsoii, Man. 444 (1925). D. ei/clomorpha PavRon, Am. Jour. Bot. 4:263 

 (1917), type loc. Mt. Brewer, Brewer 2811. D. lemmonii var. cyclomorpha O. E. Schulz; Engler, 

 Plkr. 4"*:ii4 (1927). D. loninsiiiunuasd O. E. Scluilz, I.e., based on Purpus 5118, doubtless from 

 the poutliorn Sierra Nevada. D. cnu-iata Payson, Am. Jour. Bot. 4:205 (1917), type loc. Min- 

 eral Kinp. Tulare Co., IlaU 4- Babcock 53C1. 



8. D. nivalis Lil.j. v;ir. californica Jcpson. C.\ltfornia Dkara. Root-crown 

 rather loosely branched, its branches of tlie season producing a rosette of leaves 

 at apex and the next season slender naked flowering stems 3 to 4 inches high; leaf- 

 blades oblanceolate, aeutish, obscurely repand, usually with a pair of short teeth 

 toward the apex, slightly thickened, thinly stellate-pubescent, not ciliate, 3 to 4 

 lines long; sepals ^o line long, glabrous, thin-margined, yellow; petals bright yel- 

 low, 2Y2 lines long; stamens less than y2 the length of the petals; pods linear-lance- 

 olate, acuminate, generally slightly oblique, 4V2 lines long, glabrous; style slender, 

 14 to Vi: line long. 



Alpine slopes, 9000 feet: Sierra Nevada in Tulare Co.; rare. 

 Loc. — ^^ineral King, T. Brandegee (in 1892). 



Rcfs. — Draba nivalis Lilj. Vet. Akad. Handl. 1793:208 (1793). Var. californica Jepson, 

 Man. 444 (1925), type loc. Mineral King, T. Brandegee. 



9. D. breweri Wats. Cushion Draba. Alpine dwarf, the stems 1 to 4 inches 

 high, arising from a densely leafy cushion; herbage hoary with a stellate pubes- 

 cence; blades of basal leaves oblong, obtuse, entire or rarely sparingly toothed, 2 to 

 4 lines long, sessile or narrowed to a broad petiole, 2 to 4 lines long; cauline leaves 

 few, oblong-ovate; sepals oblong; petals white, 1 to 1^/2 lines long; pods linear- 

 oblong, obtusish, often twisted, pubescent, 2 to 3 lines long, on short ascending 

 pedicels; stigma sessile or nearly so. 



Alpine rocky slopes and summits, 10,000 to 13,500 feet : Sierra Nevada from 

 Siskiyou Co. to Tulare Co. ; White Mts. June-July. 



Locs. — Mt. Shasta (N. Am. Fauna, 16:147) ; Lassen Peak, R. M. Austin; Mt. Dana, Jepson 

 3316; Mt. Warren, Congdon; Harrison Pass, Tulare Co., Jepson 5040; Mt. Whitney, Jepson 

 1065 ; Wliite Mts., Mono Co., ShocUey 439, Jepson 7322. 



Var. sublaxa Jepson. Stems 4 to 7 inches high; pubescence thinner; lower leaves less 

 crowded, the blades oblanceolate, toothed or entire, thinner, 6 to 9 lines long; pods oblong- 

 lanceolate to lanceolate, acute or acuminate, 3 to 4 lines long. — Saddle between Mt. Dana and 

 Mt. Gibbs. 



Refs. — Draba breweri Wats. Proc. Am. Acad. 23:260 (1888), based on spms. from Mt. 

 Dana, Brewer, and White Mts., Mono Co., ShocMey; Jepson, Man. 444 (1925). Var. sublaxa 

 Jepson, I.e., type loc. saddle between Mt. Dana and Mt. Gibbs, Chcsnut 4" Drew. 



10. D. corrugata Wats. Penance Draba. Stems several from a simple or 

 somewhat branched root-crown, 2 to 9 inches high; herbage loosely pubescent with 

 branching hairs; leaves in a dense basal tuft, few or much reduced on the flowering 

 stems, 1^ to 1 (or 2) inches long, the blades oblong-oblanceolate to narrow-obovate, 

 obtusish, entire, usually narrowed at base to a broad petiole; sepals pubescent; 

 petals pale yellow, narrowly linear-cuneate, li/4 lines long, notched at apex; pods 

 lanceolate to broadly oblong, acute or obtuse, pubescent, much corrugated and 

 twisted, 2 to 5 lines long, on pedicels 1 to 5 lines long; style 1 line long. 



Alpine at 9500 to 11,500 feet, but descending to forest areas at 8000 feet: San 

 Gabriel, San Bernardino and San Jacinto mountains. June. 



Ecol. note. — The size of plants and leafiness of the flowering stems vary greatly with situa- 

 tion. Plants of the mountain summits (the form called Draba saxosa Dav.) have scapose flower- 

 ing stems, are generally reduced in size and resemble D. lemmonii in foliage but may be distin- 

 guished by their more slender exserted styles and exserted stamens. 



Locs. — Ontario Ridge, Peirson 57; Mt. San Bernardino, J. Grinnell 45; Mt. San Gorgonio, 

 W. G. Wright; South Fork Santa Ana Canon, Hall 7509 (in fir forests, plants 9 to 10 inches high) ; 

 Mt. San Jacinto, F. M. Reed 2517; El Toro, Santa Rosa Mts., Munz 5870. 



