254 CRUCIFER^, 



seeds iu 1 row, orbicular or ovoid, very tliin and flat, broadly winged. — 

 Yosemite, and mountains near Tebachapi, thence so^^tbward. 

 * * Perennials; pods erect or ascending. 



3. A, platysperma, Gray, Proc. Am. Acad. vi. 519 (1865). Stems 

 several, from a snfFrutescent base, slender, 4 — 12 in. hig-h; canescent 

 with a minute stellate pubescence: lower leaves oblanceolate or spatulate, 

 entire, 1 in. long-; cauline small, sessile, not auricled at base: petals 

 rose-color, 2 — 3 lines long: pods few, straight, erect, 1 — 2 in. long, 2 lines 

 wide, acuminate; style 0: seeds in 1 row, with a broad thin wing. — - 

 Yosemite and northward at alpine or subalpine elevations. 



4. A. Lyallii, Wats. 1. c. Habit of the preceding, but herbage either 

 bright green or glaucous, only the lower part pubescent : radical leaves 

 on slender petioles, oblanceolate, acute, entire; cauline oblanceolate, 

 clasping by a sagittate base : petals 3 lines long, pinkish, twice the length 

 of the sepals: pods straight, narrowly linear, 1 — 3 in. long; seeds in 2 

 rows, narrowly winged. — In the Sierra from Mono Pass northward. 



5. A. blepharophylla, H. & A. Bot. Beech. 321 (1840); Bot. Mag. t. 

 6087. Stems stout, tufted, 4 — 12 in. high; herbage deep green, glabrous 

 or sparsely pilose-pubescent: lower leaves obovate to broadly spatulate, 

 1 — 2 in. long, entire or sparingly sinuate-toothed, strongly ciliate; cauline 

 oblong, sessile, obtuse or acutish: sepals usually purplish: petals of a 

 rich red-purple, % ^^- long or more: pods 11}4 in- long, 1 — 13^2 lines 

 wide, suberect, beaked with the short stout style: seeds in 1 row, a line 

 wide, wingless or narrowly margined. — Common on rocky hills, from San 

 Francisco to Monterey, and a most beautiful species. Feb. — Apr. 



■ * * * Perennials (except n. 10); pods spreading, recurved or dejie.red. 



6. A. Breweri, Wats. Proc. Am. Acad. xi. 123 (1876). Low, tufted, 

 rather rigid, 2 — 10 in. high, canescent with a dense stellate pubescence, 

 and hirsiite above with nearly simple hairs: radical leaves spatulate, 1 

 in. long, short-petioled, entire; cauline ovate-oblong, sessile, not sagit- 

 tate, acute, % — 3| iji, long: petals rose-purple, 1 — 4 lines long, well 

 exceeding the purplish sepals: pods spreading or recurved and rather 

 crowded at the summit of the stem, 1}4 — '^14 ™- long, scarcely a line 

 wide: seeds narrowly winged. — Inner Coast and Mt. Diablo Ranges, 

 from Mendocino and Lake counties to Mt. Hamilton; usually growing 

 on rocks. Apr. — June. 



7. A. Leiiiinoiii, Wats. 1. c. xxii. 467 (1887): A. canescens, var. stylusa, 

 Wats. Bot. Calif, ii. 431 (1880). Size and habit of the last, or smaller, 

 stellate-pubescent below, glabrous and glaucous above: lower leaves 

 spatulate-oblanceolate, ^o — '^4 ™- long, rarely with a few teeth, the 

 petiole sometimes ciliate; cauline sessile, auriculate: fl. small, rose- 



