Streptanthus. CRUCIFER^. 169 



S. Lemmoni, Watsox. Pauiculately branched : lower leaves unknown ; the upper lanceo- 

 late, auriculate ; the rameal bracts ovate to rounded, cordate-clasping, with very short lobes : 

 flowers rather small (2 to 4 lines long) : sepals acuminate with recurved or spreading tips: 

 petals white ( 1 ) : pods 2 to 3 inches long, narrow, on short pedicels ; stigma sessile ; seeds 

 unknown. — Proc. Am. Acad. xxv. 125. — Santa Catalina Mts., Arizona, Lemmon, 1880. 



•k— H— Glabrous and glaucous biennials or perennials (?), with broad thickish leaves obtuse 

 or only acutish ; the cauline cordately clasping : inflorescence ebracteate : stems mostly 

 simple : sepals obtuse, mostly more or less setosely pubescent. 



S. barbatus, Watson, 1. c. Stems apparently several from a perennial (?) root, simple or 

 at length branching • the leaves all similar and nearly equal, crowded, cordate, sessile and 

 clasping, obtuse or acutish, three fourths inch long or less ; floral bracts none : flowers 3 to 4 

 lines long, purple ; sepals obtusish, setosely bearded near the apex : pods spreading on 

 pedicels 1 to 3 lines long, curved, I to 2 inches long by 1^ lines broad ; stigmas sessile or 

 nearly so ; seeds roundish, narrowly margined. — S. tortuosus, Gray in Torr. Bot. Wilkes 

 Exped. 227. — Sapdy bottoms of the Upper Sacramento, Wilkes Exped., 1842, Lemmon, 

 1879. Ripe fruit unknown. 



S. COrdatuS, Nutt. Stems often stout, simple or sometimes branched from the base, 1 to 3 

 feet high : lower leaves spatulate, coarsely toothed, especially toward the summit ; the 

 teeth often bristle-tipped, and the petiole occasionally bristly ciliate ; cauline leaves oblong 

 to ovate or cordate, usually very obtuse and entire : sepals uniform and erect, 4 lines long ; 

 the narrow purple petals a half longer : filaments distinct : pods spreading, 3 to 5 inches 

 long by 2 to 2^ lines broad, on short pedicels 3 to .5 lines long, beaked with a short thick 

 style or the scarcely lobed stigma nearly sessile ; seeds orbicular, winged. — Nutt. in Torr. 

 & Gray, Fl. i. 77 ; Wats. Bot. King Exp. 19 ; Brew. & Wats. Bot. Calif, i. 34. — In the moun- 

 tains of Colorado and westward to the Sierra Nevada, Ebbett's Pass at 8,000 feet alt.. 

 Brewer. Specimens collected by Brewer (no. 1885) in Sonora Pass at 10,000 feet alt. differ 

 in their entire and more lanceolate acutish leaves (the lower oblanceolate and ciliate), and 

 approach the next species. 



H— -f— -(— Glabrous and glaucous annuals or biennials (?), with cauline leaves lanceolate 

 and acute : inflorescence ebracteate : pods broad except in S. campestris. 



S. Arizonicus, Watson. Leaves rather thin, all entire or nearly so ; the lower oblong- 

 lanceolate, petiolate, not ciliate ; the upper oblong to narrowly lanceolate with rounded 

 auricles : flowers pale ; the sepals strongly saccate ; the petals 6 or 7 lines long : filaments 

 distinct : pods erect or ascending, 2 to 3 inches long by 2 to 24^ lines broad, obtuse or acute, 

 with broad sessile 2-lobed stigma; seeds orbicular, very broadly winged. — Proc. Am. Acad, 

 xxv. 125. — Mountains of S. Arizona, Pringle, 1881, Parish, Lemmon, no. 4170. 



S. campestris, Watson, 1. c. Stems stout, 2 to 4 feet high : leaves rather thick, often 

 irregularly toothed ; the teeth at first setosely tipped and the lower margin of the leaf 

 sparingly setose-ciliate ; cauline leaves lanceolate or oblanceolate : flowers somewhat dark 

 purple, 4 to 5 lines long ; the sepals often somewhat hairy at the top : filaments distinct : 

 pods spreading and curved, 3 to 6 inches long by about a line broad, beaked with a short 

 stout style and shortly 2-lobed stigma ; seeds winged. — At Campo near the southern 

 boundary of California, G. R. Vasey, Parish Bros. A specimen collected by Parish Bros, 

 in the San Bernardino Mts. is apparently the .same. 



S. carinatus, Wright. Stems 1 to 3 feet high : lower leaves lyrately pinnatifid ; the upper 

 lanceolate and usually entire : flowers large, dark purple to white : the sepals deeply sac- 

 cate : filaments distinct: pods erect or ascending on pedicels 3 to 8 lines long, H to 2^ inches 

 long by 2.^ to 3 lines broad, beaked with a very short style or the 2-lobed stigma sessile; 

 .seeds orbicular, broadly winged. — Gray, PI. Wright, ii. 11. — W. Texas to S.Arizona. 

 (Chihuahua, Primjle.) 



* * Filaments distinct : leaves sagittate : pods reflexed, narrow : pubescent annuals. 



S. heteroph^llus, Nutt. More or less pubescent throughout with spreading simple 

 hairs : stem usually simple, 3 feet high or less : leaves linear, at least the lowest pinnatifid 

 with divaricate lobes or toothed ; the upper usually entire : flowers purjile or white, 4 to 6 

 lines long : the calyx narrow Itut slightly saccate : pods abruptly reflexed on slender pedicels. 



