Thelypodium. CRUCIFER^. 173 



* * Caiiline leaves often reduced to linear bracts, when well developed narrowed or dis- 

 tinctly petiolate at the base. 



-H- Sparingly pilose to hirsute. 



C. pilosUS, Watson. Simple or branched, biennial, 2 to 4 feet high : stem leafy up to the 

 iulloresceuce : leaves coarsely toothed or piunatiiid, 3 to 8 inches in length ; terminal seg- 

 ment not greatly exceeding the others : raceme long, pedicels 2 to 8 lines in length, smooth 

 or hispid, spreading : howers rather small, greenish, or purjjle, ascending : calyx narrow; 

 sepals linear-oblong, 3 to 4 lines in length, usually somewhat hispid, little exceeded by the 

 petals : siliques long and very narrow, two thirds line in diameter, tlexuous, widely spread- 

 ing or recurved. — Bot. King Exp. 27 ; Brew. & Wats. 1. c. — Sandy soil, in sage brush, &c., 

 N. W. Nevada, Wutson, Shockley, Crystal Spring, Eastern California, Coville & Funstun, to 

 Oregon, Howell, Cusick; fl. May and June. Immature and therefore doubtful specimens 

 collected at Silver City, Brit. Columbia, along the Cauad. Facif. Kailway, Macoun, are prob- 

 ably introduced from farther south. 



-f— -I— Stem glabrous. 

 •H- Flowers ascending or erect. 



C. crassieaiilis, Watson. Stem simple, erect, 1 to 3 feet high, very thick, fistulous: leaves 

 chiefly clustered at or near the base, oblanceolate in outline, lyrately toothed or pinnatifid, 



2 to 5 inches long ; cauline leaves few, much reduced, linear or somewhat hastate : flowers 

 subsessile, large : sepals oblong-lanceolate, 5 to 6 lines long, more or less pubescent, usually 

 densely so, often velvety: pods ascending, slender, terete, 4 to 5 inches long. — Bot. King 

 Exp. 27, & Bibl. Index, 55 ; Jones, Zoe, iii. 283. Streptanthus crassicauiis, Torr. in Stansbury, 

 Eep. 383, t. 1, & Flora, 1853, 702 ; Durand, Fl. Utah, 159 ; Gray, Proc. Am. Acad. vi. 186.— 

 Kocky ground and slopes of foothills, Utah to Central and S. California, north to Idaho, 

 Miss Mulford ; fl. May to July. A form with slender stem has been collected in Bear 

 Valley, S. Calif., Parish Bros. 



Var. glaber, M. E. Jones. Sepals as well as other parts quite glabrous. — Zoe, iv. 

 266. — S. Utah and E. Nevada. 

 C. procerus, Watson. An erect stout sparingly branched biennial : basal and lower cau- 

 line leaves runciuate-piunatifid, 4 to 8 inches long, narrowed at the base to a distinct petiole ; 

 uppermost lanceolate, attenuate, subentire : flowers greenish white : pedicels smooth, ascend- 

 ing, 3 lines long : sepals smooth, oblong, 4 lines in length, little exceeded by the petals. — 

 Bot. King Exp. 27 ; Brew. & Wats. Bot. Calif, i. 36. Streptanthus Jlavescens, Gray, Proc. 

 Am. Acad. vi. 186, in part. S. procerus, Brew, in Gray, 1. c. 519; Bolander, Cat. 5; Wats. 

 1. c. 19. Thelijpodium procerum, Greene, Fl. Francis. 263. — Central California. 



C. glaucus, Watson. Branching, smooth and glaucous : leaves succulent, ovate or lanceo- 

 late, obtuse or acute, subentire ; the cauline well developed, narrowed at the base or 

 abruptly contracted and somewhat decurrent upon the petioles : sepals smooth, tinged with 

 purple, oblong, 4 lines in length, a line in breadth : petals exserted and recurved : pedicels 



3 to 5 lines in length, glabrous : fruit slender, terete, 3 to 4 inches long, falcate or flexuous, 

 widely spreading. — Proc. Am. Acad. xvii. 364. — In clefts of rock, &c., Nevada, Candelaria, 

 Esmeralda Co., at 6,500 feet alt., Shockley ; Belleville, Jones ; fl. May and June. 



•H- ++ Flowers horizontal or somewhat deflexed. 

 C. hastatus, Watson. Perennial, erect, 2 to 4 feet high, simple or sparingly branched : 

 cauline leaves well developed, variable, usually with a large deltoid to lanceolate acutish or 

 obtuse subentire or hastately lobed segment and often, but not always, several much smaller 

 segments arranged irregularly upon the long slender petioles : racemes dense and spike-like : 

 flowers small for the genus, spreading and peudnlous almost from the first : sepals narrow, 

 glabrous, greenish white : capsules slender, spreading or ascending, somewliat knotted and 

 often falcate or flexuous. — Bot. King Exp. 28, t. 3 ; Brew. & Wats. Bot. Calif, i. 36. — 

 Shaded slopes of the Wasatch and Uinta Mountains, Utah, Watson, Hooker & Gray, to the 

 Blue Mountains of Oregon, Cusick ; fl. June. 



48. THELYPODIUM, Endl. (©^Xv?, female, and ttoi;'?, foot, stalk, 

 referring to the more or les.s distinctly stiped ovary.) — A considerable genus of 

 the West and Southwest, most of the species biennials, often succulent, with 



