164 MINNESOTA BOTANICAL STUDIES. 



Astragalus dispermus A. Gray. Proc. Am. Acad. 13: 



364. 1878. 



California and Arizona. 



Astragalus gambellianus Sheld. Bull. Minn. Geol. and 

 Nat. Hist. Surv. n. 9 : 19. 1894. 



Astragalus nigrescens 'NVTT. PI. Gambell. 152. 1848. 

 Not Astragalus niqrescens Pall. Astrag. 65. 1800, 



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

 which is a Siberian species. 



Not Astragalus nigrescens A. Gray. Am. Journ. Sci. ii. 33: 410. 1862, 

 Trior Phaca nigrescens Hook. F1. Bor.-Am. 1: 143. 1833, 



which are synonyms of Astragalus muUifiorus A. Gray. Proc. 

 Am. Acad. 6 : 226. 1866, which was founded on Ervwm mulii- 

 florum PuRSH. Fl. Amer. Sept. 2 : 739. 1814. 



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

 difference between this species and Astragalus didymocarpus 

 Hook, and Arn. i ^ 



California. 



Astragalus didymocarpus Hook, and Arn. Bot. Beechey. 

 334. 1840. 



Tragacantha didymocarpa OK. Rev. Gen. PI. 2:944. 1891. 

 California. 



§ 24. Reflexus. 

 Astragalus reflexus T. and G. Fl. 1 : 334. 1838. 



Tragacantha reflexa OK. Rev. Gen. PI. 2 : 947. 1891. 

 Texas . 



§ 25. Hypoglottidens. 



Astragalus Yentoriini A. Gray. Am. Nat. 8:212. 1874. 

 Tragacantha ventorum OK. Rev. Gen. PI. 2: 949. 1891. 

 Western Wyoming. 



Astragalus terminalis Wats. Proc. Am. Acad. 17:370. 



1882. 

 Montana. 



13. Ciireene. Flora Franciscana 1 : 7. 1S91. 



