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Astragalus fit^xuosus, (Hook.) Dougl. Flexile Milk 

 Vetch. 



On dry soils throughout the state. 



Astrag-alus aborig-iiiuin, Richards. Indian Milk Vetch. 

 Near Deadwood, in the Black Hills. 



Astragalus aborigiuuwi glaberiusculus, (Hook.) Ryd- 

 berg. Indian Milk Vetch. 

 In the Black Hills. 



Astragalus alpiuus, L. Alpine Milk Vetch. 

 In woods in the Black Hills. 



Astragalus coiivallarius, Greene. 



Near Bull Spriugs in the Black Hills. 



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

 Phaca frigida Ainericana^ Hook. 



On low ground in thickets in the Black Hills and the 

 adjacent plains. 



Honialobus tenellus, (Pursh.) Britton. Loose-flowered 

 Milk Vetch. 

 Astragalus tenellus^ Pursh. 



Honialobus iiioutanus, (Nutt.) Britton. Prickly Milk 

 Vetch. 

 Astragalus Kentrophyta^ A. Gray. 



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



Honialobus esespitosus, Nutt. Tufted Milk Vetch. 

 Astragalus ccBspitosus, A. Gray. 



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

 plains region. 



Oropliaca ca^spitosa, (Nutt.) Britton. Sessile-flowered 

 Milk Vetch. 

 Astragalus cccspitosa^ Nutt. 



In dry soils from the Missouri river westward. 



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

 Oxytropis Laniberti^ Pursh. 

 Abundant on high ground throughout the state. 



