Ryuberg : Rocky Mountain flora 471 



glabrata, but these leaves are more tomentose. The primary 

 leaves are neither erect nor subulate and somewhat spine-hke as 

 they are in T. glabrata. It differs from T. canescens in the narrower, 

 more or less falcate primary leaves and the presence of secondary 

 fasciculate ones. 



Tetradymia longispina (M. E. Jones) Rydb. comb. nov. 

 Tetradymia spinosa longispina M. E. Jones, Proc. Calif. Acad. 



Sci. II. 5: 698. 1895. 



This I think deserves specific rank. 

 New York Botanical Garden. 



