570 Rydberg : Rocky Mountain flora 



Colorado: Ouray, 1901, Uiuierivood & Selby igj (type) ; 

 mountains between Sunshine and Ward, 1902, 1 weedy jogz ; near 

 Boulder, jop/ ; Chamber's Lake, 1899, and i^C)6, Baker ; Veta 

 Pass, 1900, Rydberg & Vreelaiid j86o ; Ward, 1901, Osterhout 

 2^60; Caribou, 1891, Penard 122 ; Empire, \^g2, Patterson 208. 



Wyoming : West De Lacy's Creek, 1 899, Aven & PJias Nelson ; 

 Headwaters of Clear Creek and Crazy Woman River, 1900, 

 Tweedy 364.0; Dayton, 1899, Tweedy 26og ; Biscuit Geyser 

 Basin, 1897, Rydberg & Bessey 4578. 



Anogra cinerea sp. nov. 



Branched perennial, stem 3-4 dm. high, whitish, cinereous, 

 strigose when young ; leaves lanceolate to ovate-lanceolate, mostly 

 subsessile, 3-5 cm. long, sinuate-dentate or denticulate, cinereous ; 

 calyx glabrous or sparingly long-hairy, acuminate ; tips free and 

 rather long; petals 15-18 mm. long; pods divergent at right 

 angles to the stem, 3—3.5 cm. long, almost straight. 



This species is nearest related to Anogra latifolia {Oenothera 

 pallida latifolia Rydb.), but differs in the almost glabrous not 

 cinereous cal)'x and the narrower leaves. 



Colorado : Between Bent's Fort and Pueblo, 1885, Fremont 

 2J4 (type in herb. Columbia University); Denver, 1895, Paunnel 

 202. 



South Dakota: Banks of Cheyenne River, 1891, T. A. 

 Williams. 



Wyoming: St. Antony, 1901, Merrill & Wilcox 8 j6 {this with 

 more hairy calyx). 



Anogra Vreelandii sp. nov. 



Perennial ; stem erect, strict, 3—5 dm. high, white and shining ; 

 leaves narrowly lanceolate, about 5 cm. long, short-petioled or the 

 upper sessile, glabrous, except occasionally strigose-ciliate on the 

 margins, sinuate-dentate ; calyx sparingly hairy, acute ; the tips 

 free but very short ; petals about 2 cm. long, obcordate, white 

 turning pink ; pod cylindric, divergent at right angles or refle.xed, 

 usually somewhat curved upwards. 



The species is a close relative of A. pallida, but differs in the 

 silky hairy calyx, the very short calyx-tips and the darker green 

 foliage. It grows at an altitude of about 1800 m. 



Colorado: McElmo Caiion, 1901, J^eeland 861. 



