214 



CRUCIFER.E. 



Montane species of the Coast Ranges: HoocTs Peak, Sonoma Co. ■ 

 Humboldt Co., Chesnut and Drew. This maybe merely a form of 

 S. orbiculatus but more abundant material is needed to settle the 

 problem of relationships in this group. 



2. S. orbiculatus Greene. Annual; herbage glabrous; main stem 

 or ascending axis short, 1 to 3 in. long, bearing many ascending 

 branches, or the branches at base spreading horizontally, 8 to 5 in. 

 long; leaves rather small, lower spatulate-oblong, upper round, 

 cordate-clasping; sepals pink or purple, 2 to 3 lines long; filaments 

 distinct; pods falcate-recurved, mostly exceeding 2 in. 



Summit of Mt. Diablo; Sierra Nevada from Mono Co. to Mt. 

 Shasta. 



3. S. Breweri Gray. Herbage glabrous and glaucous; stems 1 to 

 2 ft. high, branching from near the base; leaves mostly sessile and 

 clasping, the lowermost broadly spatulate with a winged petiole, 

 toothed, the cauline broadly ovate and acute to narrowly lanceolate, 

 denticulate or entire; flowers 3 to 4 lines long, purplish; sepals 

 acuminate; 2 pairs of filaments connate; pods ascending, short- 

 pediceled, 1| to in. long by J line broad, ascending, slightly 

 curved; stigma sessile or nearly so; seeds small, orbicular, wholly 

 marginless. 



Inner South Coast Ranges: Mt. Hamilton, Arroyo del Puerto and 

 Mt. San Carlos. 



4. S. barbiger Greene. Glabrous, 1 to 2 ft. high, branched; 

 cauline leaves linear, entire; flowers white or purple, 3 lines long, 

 subsessile; calyx saccate; sepals connivent, with recurved whitish tips; 

 petals white, unequal; filaments dark purple, the upper pair connate 

 and at length exserted; fruit to 2 in. long, ^ line wide, recurved. 



Colusa Co. to St. Helena. June. 



5. S. niger Greene. Stout, 1| to 3 ft. high, much branched, the 

 herbage glabrous and glaucous; leaves linear, the lower with shallow 

 pinnate lobes or teeth, the upper entire and auriculate-clasping; 

 racemes loose, flexuous; flowers 4 to 5 lines long, long-pediceled; 

 calyx broad and saccate; sepals dark purple or black, obtuse; petals 

 white; pods ascendiiig, 1 to 2 in. long, 1 line broad, on pedicels 6 to 

 12 lines long; stigma entire, sessile; seeds broadly elliptical, narrowly 

 winged. 



Hills at Tiburon, Marin Co. Apr. Perhaps no more than a 

 robust glabrous form of S. glandulosus. 



0. S. glandulosus Hook. Jewel Flower. Nearly simple or 

 branched, 1 to 2 ft. high, the herbage more or less hispid; lower 

 leaves oblanceolate, coarsely and often saliently toothed, at least the 

 radical slender-petioled; upper lanceolate to linear, toothed or entire, 

 sessile and auriculate-clasping, the teeth callous-tipped; flowers 5 to 6 

 lines long; calyx commonly deep purple; petals purple, or white with 

 conspicuous purple veins; calyx broad and saccate; 3 sepals connivent 

 at tips, the lower free from the others and usually spreading; longest 

 pair of filaments often connate for their entire length and with 



