Rydberg : Rocky Mountain flora 47 



such a character. It grows on sandy river banks at an altitude 

 of about i, 600 m. 



Utah: Proposed dam site, near Wilson Mesa, Grand County, 

 July 1, 191 1, Rydberg & Garrett 8367 (type, in herb. N. Y. Bot. 

 Card.). 



Psoralea juncea Eastw. was described as being leafless, the 

 leaves being reduced to scales. This is true as far as the stem- 

 leaves are concerned. The basal leaves, which soon wither away, 

 are digitately 3-5-foliolate with lanceolate leaflets, 2-3 cm. long, 

 grayish, strigose and strongly veiny. 



Psoralea obtusiloba Torrey has been collected in Colorado by 

 Tweedy. 



Parosela polydenia (Torr.) Heller, P. Fremontii (Torr.) Vai!, P. 

 Johnsoni (S. Wats.) Vail, and P. amoena (S. Wats.) Vail have been 

 collected in southern Utah. 



Phaca ampullaria (S. W r ats.) Rydb. 

 Astragalus ampullarius S. Wats. Am. Nat. 7: 300. 1873. 



Phaca Wardii (A. Gray) Rydb. 

 Astragalus Wardii A. Gray, Proc. Am. Acad. 12: 55. 1877. 



Phaca subcinerea (A. Gray) Rydb. 

 Astragalus subcinereus A. Gray, Proc. Am. Acad. 13: 366. 1878. 



Phaca Cusickii (A. Gray) Rydb. 

 Astragalus Cusickii A. Gray, Proc. Am. Acad. 13: 370. 1878. 



Phaca sabulonum (A. Gray) Rydb. 

 Astragalus sabulonum A. Gray, Proc. Am. Acad. 13: 368. 1878. 



Phaca Preussii (A. Gray) Rydb. 

 Astragalus Preussii A. Gray, Proc. Am. Acad. 6: 222. 1864. 



Phaca serpens (M. E. Jones) Rydb. 

 Astragalus serpens M. E. Jones, Proc. Cal. Acad. II. 5: 641. 1895. 



Phaca Silerana (M. E. Jones) Rydb. 

 Astragalus Sileranus M. E. Jones, Zoe 2: 242. 1891. 



