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, J. B. Tarleton 
345 (type, in herb. N. Y. Bot. Gard.); Dry Gulch, 1899, Gorman 
IOr4. 
ALBERTA: Rocky Mountains, 1857-1859, Bourgeau. 
Atelophragma Forwoodii (S. Wats.) Rydb. 
Astragalus Forwoodii S. Wats. Proc. Am. Acad. 25: 129. 1890. 
Sheldon places this species in the Homalobus, but it is closely 
related to Atelophragma aboriginum and A. glabriusculum. 
Atelophragma glabriusculum (Hook.) Rydb. 
Phaca glabriuscula Hook. Fl. Bor.-Am. 1: 144. 1831. 
Atelophragma ibapense (M. E. Jones) Rydb. 
Astragalus ibapense M. E. Jones, Zoe 3: 290. 1893. 
Atelophragma Arthuri (M. E. Jones) Rydb. 
Astragalus Arthuri 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. 1814. 
Astragalus gracilis Nutt. Gen. 2: 100. 1818. 
Phaca parviflora Nutt.; T. & G. Fl. N. Am. 1: 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. 
189g. 
Astragalus scobinatulus Sheld. Minn. Bot. Stud. 1: 24. 1894. 
