Slieldov: NOMENCLATURE OF ASTRAGALUS. 21 



Astragalus oblatus n. n. 



Astragalus nudus Wats. lot. King. Exp. 5 : 74. 1871. 

 not Astragalus nudus Clo's, in C. Gay, Fl. Chil. 2 : 115. 1846, 



a Chilean species. 



Astragalus vexilliflexus n. n. 



Astragalus pauciflorus Hook. Fl. Bor. Am. 1 : 149. 1838. 

 not Astragalus paucijlorus Pall. Astrag. 81. 1800, 



which is a synonym of Gueldenstaedtia pauciflora DO. Prod. 

 2 : 307: 1825, a native of the Alps. 



Atsragalus gilvillorus n. n. 



Astragalus triphyllus Pursh, Fl. Amer. Sept. *2 : 740. 1814. 

 Phaca triphylla Eat. & Wright, N. Am. Bot. 3.5L 1840. 

 not Astragalus triphyllus Pall. Astrag. 68. 1800, 



a synonym of Oxytropis triphylla DC. Astrag. 77. 1802, a native 

 of Siberia. 



Phaca caespitosa Nutt. Gen. 2 : 98. 1818. 

 not Astragalus caespitosus Pall. Astrag. 70. 1800, 



a synonym of Oxytropis caespitosa Pers., Syn. PI. 2 : 333. 1807, 

 an Oriental species. 



Phaca argophylla Nutt. in T. & G. Fl. 1: 343. 1838. 

 not Astragalus argophyllus Nutt. in T. & G. Fl. N. Am. 1:331. 1838. 



a synonym of Astragalus glareosus DouGL. in Hook. PI. Bor. 

 Am. 1:152. 1833, a native of the Columbia river valley. 



Astragalus gambellianus n. n. 



Astragalus nigrescens Nutt. PL Gambell. 152. 1848. 

 not Astragalus nigrescens Pall. Astrag. 65. 1800, 



a synonym of Oxytropis nigrescens DC. Prod. 2 : 278. 1825, 

 which is a Siberian species. 



not Astragalus nigrescens A. Gray. Am. Journ. Sci. II, 33:410. 1862, 

 nor Phaca nigrescens Hook. Fl. Bor. Am. 1 : 143. 1833, 



which are synonyms of Astragalus midtifloriis A. Gray, Proc. 

 Am. Acad. 6 : 226. 1866, which was founded on Ervum multi- 

 Jforwm Pursh, Fl. Amer. Sept. 2:739. 1814. 



Professor E. L. Greene has pointed out very clearly the 

 difference between this species and Astragalus didyynocarpus 

 Hook. & Arn. i. 



Named for Dr. Gambell, who first collected the plant. 



1. Greene, Flora Franclscana, 1 : 7. 189L 



