74 MONTANA AGRICULTURAL COLLEGE SCIENCE STUDIES. 



Timber, Sweet Grass county, June 15, 1902. 



The species belongs to the plains, like A. dccumbcns with which 

 it appears to intergrade. A. Nelson's "No. 198, Laramie Hills, Wyo., 

 June 9, 1894" seems to belong here and "No. 7085, Steamboat Mtn., 

 Sweetwater Co., Wyo., June 10, 1900" also, though the latter has 

 narrower leaves and hook-tipped, mottled fruit. E. Nelson's "No. 

 4374, Willow Creek, Wyo., July i, 1898," seems intermediate be- 

 tween this and A. dccumbcns. [PLATE II. ] 



Astragalus Geyeri, Gray. Sandy roadsides with A. pictus filifoH- 

 us, Gray. Glendive, June 27, 1903 ; Miles City, May 26, 1902. 



Astragalus glareosus, Dougl. Fair-grounds, Helena, June 8, 

 and 25, 1898, E. N. Brandegee; Monida, June 16, 1899, A. & E. Nel- 

 son, 5416. 



Astragalus iodanthus, Rydberg, Flora, 244. All specimens re- 

 ferred to this species in Montana appear to be A. arictiinis, Jones. 



Astragalus leptaleus, Gray. Extends northward to the Sas- 

 katchewan (Macoun). Head of Cottonwood Creek, Tobacco Root 

 Range, 9000 ft., Aug. 10, 1902. 



Astragalus Macounii, Rydberg, Flora, 243, is A. Robbinsii Jcs- 

 supi, Eggleston & Sheldon (Minn. Geol. & Nat. Hist. Surv. 1:155); 

 A. Blakei, Eggleston (Bot. Gaz. 20: 271). 



Astragalus pictus filifolius, Gray; A. ccramicns, Sheldon, Minn. 

 Bot. Stud, i :i37. Glendive, June 17, 1903. Sandy roadsides, rare. 



Astragalus prunifer, Rydberg, Flora, 239, is A. caryocarpns, 

 Ker, which varies considerably in the color of the flowers, width of 

 leaves and size of pod; neither ought Nuttall's A. crassicarpns be 

 taken up, as its characterization in Fraser's Catalogue is insufficient 

 and may as well apply to A. Mexicanus. 



Astragalus Robbinsii Jessupi, Eggleston & Sheldon. See A. 

 Macounii above. 



Astragalus simplicifolius, Nutt. Leaves silvery canescent, sim- 

 ple, shorter than in A. cacspitosus, Nutt., and peduncles shorter and 

 pods thicker and more strongly keeled. On dry upland plains. 

 Big Coulee Cr., Sweet Grass Co., June 15, 1902. 



Hedysarum occidentale, Greene, Pittonia, 3:19. Leaves la r g - er 

 than in H. borcalc, Nutt. and loment segments few, larger and 

 sparsely hispidulous. 



Leonia, Sept. 14, 1900; Midvale, July 4, 1903, L. M. L T mbach, 270. 



