408 Rydberg: Rocky Mountain flora 



Montana: Big Horn River, 1891, Tweedy. 



Colorado: Foothills, Larimer County, 1895, J. H. Cowen, 



82 ; near Golden, 1878, M. E.Jones, 2jg ; Rist Canon, 1897,/. 



H. Cowen. 



Silene Antirrhina depauperata var. nov. 



Like the species but more slender and few-flowered ; calyx in 

 fruit very short ; petals none or small, not exceeding the calyx- 

 lobes ; blade cuneate, truncate or emarginate at the apex. 



British Columbia: Lower Arrow Lake, 1890, /. M. Macoun 

 (type). 



Colorado: 1874, G. C. Woolson. 



Arizona : Tucson, 1894,/. W. Tourney. 



South Dakota: Lead City, 1892, P. A. Rydberg, 557. 



Washington : W. Klickitat County, 1891, IV. N. Suksdorf. 



Wyoming : Hartville, 1892, Aven Nelson, j.93. 



Nebraska: Dismal River, 1893, P. A. Rydberg, ZJ49. 



Utah : City Creek Canon, 1880, M. E. Jones, 1839. 



Lychnis striata sp. nov. 



Perennial with more or less cespitose base ; stems 3—5 dm. 

 high, finely puberulent and more or less viscid above ; basal leaves 

 and lower stem-leaves narrowly oblanceolate, 5-15 cm. long with 

 a more or less distinct petiole ; upper stem-leaves sessile and linear- 

 lanceolate ; inflorescence narrow with erect branches ; calyx 

 densely viscid puberulent, strongly 10-nerved, in fruit somewhat 

 extended by the capsule, 10-12 mm. long and 5 mm. wide; its 

 lobes oblong, obtuse, somewhat scarious-margined ; petals exserted, 

 about 1 5 mm. long; claw long, narrowly cuneate, fully equaling 

 the calyx ; blade short, two-cleft, with obtuse lobes. 



This species is most nearly related to L. Drummondii, but differs 

 in the exserted petals and the more strongly 10-nerved calyx. It 

 grows at an altitude of 2000-3300 m. 



Colorado: Cameron Pass, 1896, C. F. Baker (type), also 

 1899; Silver Plume, 1895, P. A. Rydberg. 



Wyoming: Battle, 1901, Tweedy, 4535, also Headwaters of 

 Tongue River, 1898, 163 ; Yellowstone Lake, 1899, Aven & 

 Elias Nelson, 6634. 



Utah : Evanston, 1869, 5. Watson, 134. 



