34. CRUCIFER^. Streptanthus. 



¥< Glabrous or f/lmicons : stem-leaves broad and clasping hy a cordate or sagittate 

 base : a broad torus at the base of the ovary. 



1. S. cordatus, Xutt. Perennial : stems simple, 1 to 2 feet high, rather stout: 

 leaves thick, usually repandly toothed toward the apex, the teeth often setosely 

 tipped ; lower leaves spatulate-ovate or obovate, the petioles sparingly ciliate ; cau- 

 line leaves cordate to oblong or ovate-lanceolate, obtuse or acute, with a broad round- 

 auricled base : sepals broad, colored, 3 to 4 lines long, somewhat obtuse, the petals 

 about half longer, greenish yellow to purple : pods broadly linear, 2 to 4 inches 

 long, 2 lines broad or more, nearly straight, loosely spreading : seeds broadly 

 winged. — Torr. & Gray, FL i. 77 ; Watson, Bot. King Exp. 19. 



Rare at high elevations in the Sierra Nevada, Ebbett's and Sonora Passes {Brewer) ; and east- 

 ward in the mountains of Nevada and Arizona to Colorado. 



2. S. tortuosus, Kellogg. Annual, 1 to 3 feet high, with slender virgate 

 branches : lower leaves oblong, narrowed to a winged base, 2 to 3 inches long, 

 repandly toothed; the upper rounded, | to li inches in diameter, clasping by a 

 deep closed sinus, entire : llowers subsecund ; sepals broad, long-acuminate, yellow- 

 ish or purplish, 3 to G lines long, the purplish petals a little longer : pods 2 to 6 

 inches long, a line wide, falcately recurved : seeds narrowly winged or often wing- 

 less. —Proc. Calif. Acad. ii. 152, fig. 46. 



Common in the Sierra Nevada at 4,000 to 11,000 feet altitude, in dry sunny places, from the 

 Yosemite to Yuba Co. and Jit. Shasta. 



3. S. Bre"weri, Gray. Annual, branched from near the base, 1 to 2 feet high : 

 lowest leaves broadly oval or obovate, nearly sessile, dentate ; cauliue leaves ovate 

 and clasping, the uppermost lanceolate and acuminate, entire or denticulate : flowers 

 purple ; sepals acuminate, 2 to 3 lines long, somewhat pubescent or glabrous, the 

 petals half longer : pods 1| to 2i inches long, less than a line wide, erect or as- 

 cending, straight or somewhat incurved : seeds not margined. — Proc. Calif. Acad, 

 iii. 101, & Proc. Am. Acad. vi. 184. 



In the Mt. Diablo Eange, on dry summits of San Carlos Mountain and near the head of Arroyo 

 del Puerto, Brewer. 



;.. .v.. Qlabroris : stem-leaves very narrowly linear : sepals very unequal. 



4. S. polygaloides, Gray. Annual : stems 1 to 2 feet high, virgate, with 

 simple branches : stem-leaves 1 to 2 inches long, folded or involute and apparently 

 filiform : sepals yellow, the outer rounded and subcordate, 3 lines in diameter, 

 somewhat scarious, the inner oblong-lanceolate, acuminate, about equalling the 

 purple petals : pods 1 to 1| inches long, half a line wide, reflexed and somewhat 

 secund on very short pedicels, straight or nearly so, attenuate upward to the short 

 style : seeds narrowly winged. — Proc. Am. Acad. vi. 519. 



A rare and remarkable species; lower leaves unknown. On dry barren magnesian soil near 

 Jacksonville on the Tuolumne {Brewer), and on Mt. Bullion, Bolanckr. 



-k ■•:: ^ More or less hispid rvith simple hairs : flowers purple or red. 



5. S. glandulosus, Hook. Annual, more or less hispid with spreading hairs, 

 I to 2 feet high, branched : radical leaves spatulate, sinuately toothed ; stem-leaves 

 narrow to oblong-lanceolate, 1 to 6 inches long, auricled at base, sparingly repand 

 or laciniately denticulate, the teeth with somewhat thickened tips : petals bright 

 purplish-red, 6 to 8 lines long, half longer than the acutish sepals : pods 2 to 3 

 inches long, a line wide, ascending or spreading, straight or somewhat curved : 

 stigma sessile, dilated : seeds narrowly winged. — Ic. PI. t. 40 ; Bot. Beechey, 322. 



On dry hillsides from C'lear Lake to San Luis Obispo. 



6. S. heterophyllus, Nutt. Glabrous above, branching, 3 to 5 feet high : leaves 

 gash-pinnatifid, tlie stem-leaves sagittate : flowers pendulous ; sepals deep purple ; 



