570 Rydberg : Rocky Mountain flora 



Colorado: Ouray, 1901, Underwood & Selby ipj (type); 

 mountains between Sunshine and Ward, 1902, Tweedy 5092 ; near 

 Boulder, joor ; Chamber's Lake, 1899, and 1 896, Baker; Veta 

 Pass, 1900, Rydberg & Vreeland 5860 ; Ward, 1901, Osterhout 

 24.60; Caribou, 1891, Penard 122 ; Empire, 1892, Patterson 208, 



Wyoming : West De Lacy's Creek, 1899, Aven & Ettas Nelson ; 

 Headwaters of Clear Creek and Crazy Woman River, 1900, 

 Tweedy 364.0; Dayton, 1899, Tweedy 2600; Biscuit Geyser 

 Basin, 1897, Rydberg & Bessey 4578. 



Anogra cinerea sp. no v. 



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 calyx and the narrower leaves. 



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

 2 34- (tyP e ' n herb. Columbia University); Denver, 1895, Pammel 



202. 



South Dakota: Banks of Cheyenne River, 1 891, T. A. 

 Williams. 



Wyoming: St. Antony, 1901, Merrill & Wilcox 8j6 (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 reflexed, 

 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 Canon, 1901, Vreeland 861. 



