240 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



Yellowstone Park: Mammoth Hot Springs, 1885, Tzf^^'^v, j/o. 

 Also seen from the following states: 



Wyoming: Medicine Bow, 1897, Aven Nelson, ji 4^ (type). 

 South Dakota: Custer, 1892, Rydberg, 61 j, mainly. 

 Saskatchewan : 1857-8, £^. Bourgeau. 



Astragalus Carolinianus L. Sp. PI. 757 [111. Fl. 2: 298]; A. 



Canadensis L. 1. c. [Man. R. M. 61]. 



River banks, hillsides, etc., at an altitude of 2000 m. 



Montana: Spanish Basin, June 23, 1897, Rydberg & Bessey, 

 446g; West Boulder, 1887, Tzveedy, 141 ; Snowy Mountains, 1882, 

 Canby ; Rock Creek, 1883, Scribner, 26. 



Yellowstone Park : Mammoth Hot Springs, 1884, Tweedy, yd. 



Astragalus Mortonii Nutt. Journ. Acad. Phil. 7: 19 [Man. R. M. 



61 ; Bot. Cal. I : 155]. 



Common in meadows throughout the mountain regions, at an alti- 

 tude of 1000-2000 m. It ma}^ be classified among the forage plants 

 of the region. 



Montana: Beaver Head Co., 1888, Tweedy, 6; Melrose, 1895, 

 Rydberg, 2^01 ; Great Falls, 1890, R. S. Williams, 8j2; East Gal- 

 latin Swamps, 1896, Flodman, 62^; Jack Creek, July 19, 1897, 

 Rydberg & Bessey, 447s j Blackfoot River, 1883, Canby, 7/. 



Astragalus adsurgens Pall. Astrag. 40 [Man. R. M. 61 ; 111. Fl. 2 : 



299]. 



Prairies, plains and hills, up to an altitude of 2000 m. 



Montana: 1889,/^. W. Anderson, ig; Great Falls, 1886,9/; 



1890, R. S. Williams, lOj; Livingston, 1886, Tweedy, lodj; 

 Bozeman, 1887, ij2 ; Melrose, 1895, Shear, Jjj ; Deer Lodge, 

 i8g^, Rydberg, 26gg; Spanish Basin, June 23, 1897, Rydberg & 

 Bessey, 4470; Custer Co., \8<^2, Mrs. Light; Willow Creek, 1883, 

 Scrib)ier, 2ye; Hell Gate and Black Foot Rivers, 1880, Watson. 



Astragalus hypoglottis L. Mant. 2: 274 [Man. R. M. 61 ; 111. Fl. 



2: 299]. 



Meadows, at an altitude of 1200-2200 m. ; common. Apparently 

 a valuable forage plant. 



Montana: Silver Bow Co., Airs. Jennie Moore; Great Falls, 



1891, R. S. Williams, g6 ; 1882, Tweedy, igi ; Gallatin Co., 

 1887, ^J5'' Melrose, 1895, Shear, ^j^g; Manhattan, 1895, Rydberg, 

 2yoo; Bridger Mts., June 11, 1897, Rydberg d- Bessey, 4471; 



