Rydberg: Astkagalus and its segregates 665 



r 



Phaca cerussata (Sheld.) Rydb. 



Astragalus cerussatus Sheld. Bull. Geol. & Nat. Hist. Surv. Minn. 

 9: 139- 1894. 



Phaca Bodinii (Sheld.) Rydb. 



Astragalus Bodinii Sheld. Bull. Geol. & Nat. Hist. Surv. Minn 



9 : 122. 1894. 



Homalobi 



4 



pod as being flat, but all specimens with well-developed fruit show 

 that the species is a typical Phaca. 



Phaca humillima (A. Gray) Rydb. 



Astragalus humiUimiis A. Gray, in Brandegee, Bull. U. S. Geol 

 Surv. Terr. 2 : 235. 1876. 



Phaca elatiocarpa (Sheld.) Rydb. 



Astragalus lotifloriis brachypits A. Gray, Proc. Am. Acad. 6 : 

 209. 1863. 



Astragalus elatiocarpus Sheld. Bull Geol. & Nat. Hist Surv. 

 Minn. 9 ; 20, 1894. 



Wetherillu (J 



^i> 



Jones, Zoe 4 : 34. 1893. 



15. KENTROPHYTA Nutt in T. & G. FI. N. Am. i; 353. 



1838. 



Besides the K. viridis Nutt., the following are found in 

 Colorado : 



Kentrophyta impensa (Sheld.) Rydb. 



Astragalus Kentrophyta elatus S. Wats. Bot. King's Expl. j'j. 



1 87 1. Not A^ elatus Boiss. & Bal. 1849. 

 Astragalus viridis impensus Sheld. Bull. Geol. & Nat. Hist. Surv. 



Minn. 9: 118. 1894. 



Kentrophyta Wolfii Rydb. 



Homalohts Wolfii Rydb. Bull. Torrey Club 31 : 



Kentrophyta aculeata (A. Nelson) Rydb. 



562. 1904 



Astragalus tcgetarius iuipkxiis Canby, in Porter & Coult ^ 



Colo. Add. (no page-number) 1874. 

 Astragalus aadcatns A. Nelson, Bull. Torrey Club 26 : 10. 



1899. 



