I56 UNIVERSITY OF MISSOURI STUDIES [304 



619. A. nitidus Dougl. Shining milk vetch. 



Canons, north slope of Green Mt., 7000 ft. (Daniels, 278). 

 Saskatchewan to Alberta and Oregon ; Minnesota to 

 Colorado. 



620. A. sulphurescens Rydb. Sulphur milk vetch. 

 Gregory Canon, and canons on Green Mt., 6000-7500 ft. 



(Daniels, 613). Also Boulder Canon and near Boulder (Ryd- 

 berg). Redrock lake, 10100 ft. (Ramaley & Robbins). 

 Colorado. 



621. A. virgultatus Sheld. [A. hypoglottis bracteosus Osterh.]. 

 Bushy milk vetch. 



At Boulder, 5000-8000 ft. (Rydberg). 

 Wyoming to Colorado. 



622. A. goniatus Nutt. [A. hypoglottis polyspermus T. & G.]. 

 Purple milk vetch. 



Abundant on the plains, mesas, and along streams in the 

 foothills, 5100-9000 ft. (Daniels, 5). 



Saskatchewan to Washington; Colorado to California. 



250. TIUM Medic. 



623. T. Drummondii (Dougl.) Rydb. [Astragalus Drum- 

 mondii Dougl.]. Drummond's milk vetch. 



Mesas and foothills, 5700-8000 ft. (Daniels, 76). Valmont 

 (Coulter in Wabash College Herb.). 

 Saskatchewan to Alberta ; Nebraska to Colorado. 



624. T. alpinum (L.) Rydb. [Astragalus alpinus L.]. Al- 

 pine milk vetch. 



Boulder Canon above Falls ; Eldora and along the Arap- 

 ahoe Trail to timberline, 7000-1 1500 ft. (Daniels, 857). 



Labrador to Alaska ; Vermont to Colorado : Northern 

 Europe and Asia. 



251. ATELOPHRAGMA Rydb. 



625. A. elegans (Hook.) Rydb. [Phaca elegans Hook. ; Astrag- 

 alus oroboides Americanus Gray]. Pretty milk vetch. 



About Eldora and along the Arapahoe Trail to timberline 

 and beyond, 8600-13000 ft. (Daniels, 1020). 



Labrador and Quebec to Saskatchewan ; Idaho to Colo- 

 rado. 



