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Astragalus flexuosus, (Hook.) Dougl. Flexile Milk 

 Vetch. 



On dry soils throughout the state. 



Astragalus aboriginum, Richards. Indian Milk Vetch. 

 Near Deadwood, in the Black Hills. 



Astragalus aboriginuin glaberiusculus, (Hook.) Ryd- 

 berg. Indian Milk Vetch. 

 In the Black Hills. 



Astragalus alpiims, L. Alpine Milk Vetch. 

 In woods in the Black Hills. 



Astragalus coiivallarius, Greene. 



Near Bull Springs in the Black Hills. 



Phaca Americana, (Hook.) Rydberg. Arctic Milk Vetch. 

 Phaca frigida Americana, Hook. 



On low ground in thickets in the Black Hills and the 

 adjacent plains. 



Homalobus teiiellus, (Pursh.) Britton. Loose-flowered 

 Milk Vetch. 

 Astragalus tenellus, Pursh. 



Homalobus moutanus, (Nutt.) Britton. Prickly Milk 

 Vetch. 

 Astragalus Kentrophyta, A. Gray. 



In the Bad Land region, east of the Black Hills. 



Homalobus csespitosus, Nutt. Tufted Milk Vetch. 

 Astragalus c&spitosus, A. Gray. 



In dry soils in the Black Hills, and in the adjacent 

 plains region. 



Orophaca csespitosa, (Nutt.) Britton. Sessile -flowered 

 Milk Vetch. 

 Astragalus ccespitosa, Nutt. 



In dry soils from the Missouri river westward. 



Spiesia Lamberti, (Pursh.) Kuntze. Loco- weed. 

 Oxytropis Lamberti, Pursh. 

 Abundant on high ground throughout the state. 



