208 CRUCIFERAE (MUSTARD FAMILY) 



1. STANLEYA Nutt. 



Stout herbaceous perennials with entire or pinnatifid leaves, and rather 

 large flowers in greatly elongated spike-like racemes. Buds crowded, each 

 elon-ated-elavate. Calyx narrow, spreading, yellow. Petals with long con- 

 nivent claws, yellow. Anthers linear, curved or spirally coiled; filaments 

 elongated, spreading. Capsule subterete, long-stipitate. 



Li-av<>-< variously pinnatifid. 



1'huit tomentose or white-villous . . . . . . . 1. S. tomentosa. 



Plant glabrous or pubescent, not tomentose. 



Flowers pale or cream-color . . . . . . . . 2. S. albescens. 



Flowers; bright yellow 



Leaves twice-pinnate or dissected . . . . . . 3. S. bipinnata. 



Leaves simply-pinnate or subentire . . . . . . 4. S. pinnata. 



Leaves entire or nearly so. 



Leaves mostly cauline, normal . . . . . . . 5. S. mtegrifolia. 



Leaves mostly basal; stem leaves reduced 6. S. viridiflora. 



1. Stanleya tomentosa Parry, Am. Nat. 8: 212. 1874. White-villous or 

 hirsute throughout, stout, 8-15 dm. high: lower leaves lyrate-pinnatifid ; the 

 upper entire and hastate: raceme dense, thick, cylindrical, 3-5 dm. long: 

 flowers pale or cream-color: pedicel and stipe subequal. Dry gypsaceous soil; 

 Big Horn Basin, Wyoming. 



2. Stanleya albescens Jones, Zoe 2: 17. 1891. Erect and branching, 

 3-10 dm. high: leaves thick, pale and glaucous, lyrately pinnatifid or some 

 of the upper entire, more or less petioled, with hastately auricled base: sepals 

 greenish-white : petals cream-color, the blade broad, the narrow claw scarcely 

 woolly-pubescent: anthers tightly coiled : silique curved-ascending. Western 

 Colorado, Utah, and southward. 



3. Stanleya bi pinnata Greene Erythea 3: 173. 1896. Closely allied to the 

 preceding but the stems several from the same crown, spreading-assurgent, 

 3-5 dm. high: leaves sometimes dissected, at least more or less twice-pinnate, 

 usually lightly pubescent above but often glabrous: inflorescence slightly 

 pubescent or glabrous: siliques very slender, torulose and tortuous; the stipe 

 about equaling the pedicel. (S. glauca Rydb. Bull. Torr. Bot. Club 31: 409. 

 190-i.) Dry banks and slopes; Wyoming, Colorado, Utah. 



4. Stanley apinnata (Pursh) Brit. Trans. N. Y. Acad. Sci. 8: 62. 1888. 

 Glabrous or nearly so, 4-10 dm. high: leaves mostly cauline, from nearly en- 

 tire to pinnately divided; the lower rather long-petioled ; the upper often 

 entire, short-petioled : petals 15-20 mm. long: stamens well exserted: siliques 

 somewhat torulose, twice as long as the stipes. (S. arcuata Rydb. Bull. Torr. 

 Hot. Club 29: 232. 1902.) Widely distributed; dry plains; Dakota to New 

 Mexico and California. 



5. Stanleya integrifolia James, Cat. 185. 1825. Closely allied to S. pin- 

 jtdln, stems less stout but the base indurated -shrubby, erect, 3-6 dm. high: 

 leaves entire, or the lower rarely few-toothed, mostly oblong, all short-petioled: 

 buds cylindric, the raceme relatively short: pedicel shorter than the stipe 

 which is somewhat surpassed by the slender curved spreading silique. Wyom- 

 ing and Colorado. 



<>. Stanleya viridiflora Nutt. T. & G. Fl. N. A. 1: 98. 1838. Glabroils, 

 1 \'2 dm. high: leaves crowded toward the base, mostly entire; the lower 

 cuneate-obovate, sometimes with a few teeth toward the base; becoming 

 smaller upward, clasping, lanceolate and passing into the bracts of the greatly 

 elongated spike-like raceme: sepals and petals greenish-yellow. From the 

 Mexican border to the upper Missouri, and west to California. 



2. SCHOENOCRAMBE Greene. PLAINS MUSTARD 



IVivnnial herbs from long horizontal rootstocks which give rise at intervals 

 IM .-I i -ndcr vir^ate simple or branched stems, with no root leaves, linear, en- 

 tin-, or pinnate stem leaves, and racemose slender-pediceled rather large 

 yellow flowers. Buds cylindric-oblong. Sepals erect. Petals twice as long 



