Rydberg : Rocky Mountain flora 5 1 1 



num unilateral (Cassidy) Vasey, which is the same as A. Richard- 

 sonii. J. G. Smith in his revision referred it to A. Gmelini. It 

 resembles both a great deal in habit, but is distinguished by the 

 hispidulous floral glumes and by the empty glumes, which are 

 attached more or less obliquely, a character which would place the 

 species in Elymus rather than in Agropyron. It is a close relative 

 of E. Saundersii and E. Macounii, which also could be referred 

 almost equally well to either genus. In habit E. vulpinus is inter- 

 mediate between the two, but is distinguished by the hispidulous, 

 instead of glabrous, floral glumes and broader empty glumes. 



Nebraska : Lake region of Grant Co., northeast of Whitman, 

 Rydberg 1617 (type, in herb. N. Y. Bot. Gard.). 



Alberta: Devil's Head Lake, Aug. 8, 1891, Macoun 11452 

 in part, mixed with Agropyron subvillosum and named A. dasy- 

 stacliyum. 



New York Botanical Garden. 



