244 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



Astragalus lotiflorus Hook. Fl. Bor. Am. i : 152 [Man. R. M. 63 ; 

 111. FL 2: 301]. 



On prairies, up to an altitude of 1500 m. 



Montana: Great Falls, 1888, R. S. Williams, 103: 1886, F, 

 W. Anderson, gg. 



* Astragalus lotiflorus elatiocarpus (Sheldon) ; Astragalus lot if or us- 



hrachyptis Gray, Proc. Am. Acad. 6 : 200 : not A. hrachypus 



Schrenk ; A. elatiocarpus Sheld. Bull. Geol. & Xat. Hist. Surv.. 



Minn. 9 : 20. 



Differs from the species in having most of the flowers borne sessile 

 in the axils of the leaves. It grows in similar locations. 



Montana: Great Falls, 1889, F. W. .4;;rt'd'r5^;/,- Beaver Head- 

 Co., 1888, Tzvecdy, ij ; Huntley, 1882, Canby. 



Astragalus iodanthus Wats. King's Exp. 5: 70 [Man. R. M. 64].. 



In sandy soil, at an altitude of about 1000 m. 



Montana: Upper Sand Coulee, 1888, R. S. Williams, J4^; 

 Blackfoot River, 1883, Canby, /j. 



Astragalus Purshii Dough; G. Don, Gen. Hist. 2: 271 [Man. R. 



M. 65; Bot. Cal. i: 151]. 



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



Montana: Helena, 1888 and 1891, F. D. Kclscy ; Deer Lodge,. 

 1888,7^. W. Traphagcn; 1882, Tzveedy, 201 and 203; Gardiner, 

 1885, 5J7; Bridger Mts., June 11, 1897, Rydbcrg & Bcsscy, 44^7. 



* Astragalus inflexus Dough ; Don, Gen. Syst. 2 : 256. 



Differs from A. Purs/iii in tiie decidedly caulescent stem, and the 

 larger bright purple flowers. 



Montana: Helena, 1891, F. D. Kclscy; Sand Coulee, 1888, R. 

 S. Williams, 746; Mt. Helena, 1887, 7^. W. Anderson; Beaver 

 Head Co., 1888, Tzvcedy, 12; Bozeman, 1882, 202; Madison River, 

 1883, Scribncr, 27d : Fhathead Region, 1883, H. D. Ay res, V. 



* Astragalus Utahensis T. & G. Pac. R. R. Rep. 2 : 120 [Bot. Cal. 



I : 151] ; Phaca niollissima Utahensis Torr. in Stansb. Rep. 385. 

 Differs from A. Purshii in the rounder leaflets, which are covered 

 with a dense white tomentum. 



Montana: Beaver Head Co., 1888, F. Tzvcedy, 12. 



Astragalus bisulcatus (Hook.) A. Gray, Pac. R. R. Rep. 12- r 

 42 [Man. R. M. 67; 111. Fl. 2: 300]; Phaca bisulcata Hook. 

 Fl. Bor. Am. i : 145. 



