250 CRUCIFEE^. 



3—5 lines long, linear, acute at each end, glabrous, on spreading pedicels 

 2—4 lines long: style 0.— In the Sierra Nevada at 7,000 to 10,000 ft., 

 from Mono Pass and Yosemite northward. 



2. D. crassifolia, Grab. Edinb. Phil. Journ. 182 (1829). Habit of the 

 last, but smaller, glabrous, the .stem racemose only above the middle, 

 thus seeming more scape-like, the leaves thickish and a trifle fleshy, 

 narrowly oblanceolate or linear, I4 — 1 in. long, rarely with 1 or 2 teeth, 

 occasionally ciliate: petals yellow, scarcely a line long, little exceeding 

 the calyx : pods lanceolate, acute at each end, 3 — 4 lines long, on pedicels 

 nearly as long; style 0. — Habitat of the last. 



* * Stouter plants, often alpine and divarf, mostly perennial, 

 very leafy below. 



3. D. aureola, Wats. Bot. Calif, ii. 430 (1880): D. aurea, Wats. 1. e. i. 

 28, not Vahl. Occasionally only biennial, but stout, erect, stellate- 

 pubescent, the simple or sparingly branching stem 2 — 4 in. high : leaves 

 crowded at base, spatulate, obtuse, entire, I4 — % ^^- long: raceme short 

 and dense: fl. bright yellow: pods broadly oblong, rather obtuse at 

 each end, pubescent, 2 — 4 lines long, the ascending pedicels rather 

 shorter; style short and stout. — In the typical form this is known only 

 from Lassen's Peak, Lemmon, Horace Davis, Chesnut <.i- Drew. The Mt. 

 Dana plant referred here by Mr. Watson is considered distinct by Mr. 

 Lemmon who has seen both in the living state. 



4. D. Leiniiioui, Wats. 1. c. : D. alpina, var. algida, Bot. Calif, not 

 Regel. Densely cespitose and dwarfed; the crowded leaves spatulate or 

 oblong-obovate, ciliate and pilose, the hairs simple or forked: scape- 

 like stem 3^ — 6 in. high: petals yellow, 1^^- 2}^ lines long, much 

 exceeding the broad obtuse sepals: pods ovate to broadly lanceolate, 

 somewhat twisted, on slender spreading pedicels; style short, stout. — 

 High peaks of the Sierra Nevada. 



5. D. eurycarpa, Gray, Proc. Am. Acad. vi. 520 (1865). Dwarf, 

 densely cespitose, stellate-tomentose; the crowded leaves i.j in. long, 

 spatulate, entire: scape few-flowered, 1 — 2 in. high: pod ovate, 5—10 

 lines long, acute, beaked with a long slender style. — Found only by 

 Brewer, on a dry summit, at 11,500 ft. altitiide, above Sonora Pass in the 

 Sierra. 



6. D. Douglasii, Gray, 1. c. vii. 328 (1868). Scapes many, from a 

 branching leafy caudex, i'2 — IH iii- liigh^ pubescent, corymbose: lowest 

 leaves ovate; uppermost obovate or spatulate, 1 — 2 lines long, entire, 

 pale, glabrt)us or with simple hairs, the margin hispid-ciliolate : petals 

 white or yellowish, 2 lines long, exceeding the broad obtuse sepals : pod 

 ovate-oblong, acutish at each end, puberulent, 2 lines long, beaked with 



