MUSTARD FAMILY 41 



vieda NordyTce; Silver Lake, and up to Gem Lake, 9100 feet, Mono Co., ace. Peirson. Fallon, Nev. 

 Blanche Boss 35. 



Refs. — Thelypodium brachycakpum Torr. Phanerogamia of Pacific Coast, Wilkes Expl. 

 Exped. 231, t. 1 (1874), type loc. Klamath Eiver, "s. Ore."; Gray, Proc. Am. Acad. 6:520 (1865)* 

 his diagnosis based on "valley of Mono Lake," Brewer ; Jepson, Man. 413 (1925). Var. crispum 

 Jepson. T. crispum Greene; Payson, Ann. Mo. Bot. Gard. 9:264 (1922), type loc. Eagle Valley 

 Ormsby Co., Nev., C. F. BaTcer 1191. ' 



8. T. howellii Wats. Stem simple or branching, 11/2 to 21/^ feet high; herbage 

 glabrous and glaucous, or hirsute near the base; blades of basal leaves entire or 

 repand, with the winged petiole toothed; blades of cauline leaves linear to lanceo- 

 late, sagittate-clasping, entire, erect, % to 3 inches long; flowers 3I/2 to 4I/2 lines 

 long; sepals saccate, oblong, acuminate, white-margined, the lateral pair strongly- 

 hooded or homed at apex; petals white, flesh-color or purple, narrowly linear with 

 crisped limb ; stamens with the filaments of the 2 longer pairs commonly though not 

 always connate; anthers sagittate, strongly curled after anthesis; pods slender, 

 nearly erect, 1 to 2 inches long, tipped by the rather slender style ^2 line long; 

 stigma small, obscurely 2-cleft. 



Valley meadows, 4000 to 5000 feet : Lassen and Modoc Cos. North to eastern 

 Oregon and Washington. June-July. 



Locs. — Dixey Valley, Lassen Co., Baker ^ Nutting ; Big Valley, Modoe Co., BaTcer 4" Nutting. 



Refs. — Thelypodium howellii Wats. Proc. Am. Acad. 21:445 (1886), based on spms. from 

 Camp Polk and Harney Valley, Ore., Howell; Jepson, Man. 413 (1925). T. simplex Greene, Pitt. 

 4:200 (1900), type loc. Dixey Valley, Lassen Co., M. S. BaTcer. 



9. T. stenopetalum Wats. Stem simple or branching from the base, 1 to 2 feet 

 high; herbage glabrous and glaucous; leaf -blades oblong to lanceolate or linear, 

 auriculate-clasping, 1 to 2 inches long, the blades of the basal obovate, scarcely peti- 

 oled; flowers narrow, 4 to 5 lines long; petals white or pinkish, narrow-oblanceolate, 

 a little crisped at apex, slightly exserted; pods slender, ascending, 1% to 2% inches 

 long; stigma slightly 2-lobed. 



Stony slopes, 6800 feet : San Bernardino Mts. June, 



Loc. — Bear Valley, ParisTi, 3787. 



Refs. — Thelypodium stenopetalum Wats. Proc. Am. Acad. 22:468 (1887), type loc. Bear 

 Valley, San Bernardino Mts., ParisTi; Jepson, Man. 413 (1925). 



10. T. flexuosum Rob. Stems slender, subnaked, few or several from a thick 

 root-crown, erect or ascending, sparsely leafy with few reduced or bract-like leaves, 

 7 to 13 inches high; herbage glabrous; blades of basal leaves oblong to narrow- 

 ovate, obtuse, entire, % to 2 inches long, narrowed at base to a petiole about half 

 as long; cauline leaves few, their blades lance-linear, reduced or bract-like, sagit- 

 tate-sessile; racemes 1 to 2 inches long; flowers 3 to 3I/2 lines long; petals pale 

 purplish or white, obovate, nearly twice as long as the sepals; pods irregularly 

 torulose, reticulate, % to 1 or "3" inches long. 



Alkaline valleys and meadows, 3000 to 5000 feet : northwestern Nevada to east- 

 ern Oregon, entering California in eastern Modoc Co. May. 



Locs.— Surprise Valley, Modoc Co. (Syn. Fl. 1^:175). Ore.: Harney Valley, Howell 341; 

 Powder River, CusicTc 1884. 



Refs. — Thelypodium flexuosum Rob.; Gray, Syn. PI. r:175 (1895), type loc. Carson City, 

 Nev., Anderson (the first-cited spm.) ; Payson, Ann. Mo. Bot. Gard. 9:271 (1922). 



11. T. cooperi Wats. Stem slender, simple or branching, flexuous, 8 to 23 

 inches high, or branched and developing elongated tortuous or even serpentine 

 branchlets, the whole 2 to 3 feet long; herbage glabrous; leaves disappearing early, 

 their blades oblong-obovate to linear-oblong or linear-lanceolate, mostly entire, the 

 blades of the cauline sagittate-clasping, those of the basal contracted to a short 

 petiole, the whole 1 to 21/2 inches long; flowers narrow, 3 to 4 lines long; sepals 



