Rydberg : Rocky Mountain flora 51 



grayish pubescence of the leaves, which are strigose instead of 

 villous, and from both in the form of the pod. In both the 

 lower suture of the pod is straight or slightly concavely curved. 



Yukon Territory: Foot of Lake Lebarge, 1899, /. B. Tarleton 

 J4b (type, in herb. N. Y. Bot. Gard.); Dry Gulch, 1899, Gorman 

 1014. 



Alberta: Rocky Mountains, 1 857-1 859, Boiirgeau. 



Atelophragma Forwoodii (S. Wats.) Rydb. 

 Astragalus Forivoodii S. Wats. Proc. Am. Acad. 25: 129. 1890. 



Sheldon places this species in the Homalohus, but it is closely 

 related to Atelophragma aboriginum and A. glahriusculum. 



Atelophragma glabriusculum (Hook.) Rydb. 

 Phaca glabriiiscula Hook. Fl. Bor.-Am. i: 144. 1831. 



Atelophragma ibapense (M. E. Jones) Rydb. 

 Astragalus ibapense M. E. Jones, Zoe 3: 290. 1893. 



Atelophragma Arthur! (M. E. Jones) Rydb. 

 Astragalus Artliiiri M. E. Jones, Cont. West. Bot. 8: 20. 1898. 



Onix Mulfordae (M. E. Jones) Rydb. 

 Astragalus Mulfordae M. E. Jones, Cont. West. Bot. 8: 18. 1898. 

 This species is the only representative in America of a group of 

 plants segregated from Astragalus by Medicus. The other repre- 

 sentatives are Asiatic. Onix is related to Cystium in having a 

 membranous inflated 2-celled pod, but the pod is triangular in 

 cross-section, the upper suture being acute and the lower more or 

 less sulcate. 



Microphacos parviflorus (Pursh) Rydb. 

 Dalea parviflora Pursh, Fl. Am. Sept. 474. 18 14. 

 Astragalus gracilis Nutt. Gen. 2: 100. 1818. 

 Phaca parviflora Nutt.; T. & G. Fl. N. Am. i: 348. 1838. 



Diholcos scobinatulus (Sheld.) Rydb. 

 Astragalus Haydenianus major M. E. Jones, Zoe 2: 241. 1891. 

 Astragalus Haydenianus nevadensis M. E. Jones, Zoe 2: 241. 



1891. 

 Astragalus scobinatulus Sheld. Minn. Bot. Stud, i: 24. 1894. 



