Rydberg : Rocky Mountain flora 541 



nuvi 7/ ?ii/atcralc {CdiSsxdy^Yd.sey, which is the same as A. Ricliard- 

 soiiii. J. G. Smith in his revision referred it to A. Giiuiiiii. 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 Elynius rather than in Agropyroii. It is a close relative 

 of E. Sawidersii and E. ATacounii, which also could be referred 

 almost equally well to either genus. In habit E. vitlpiinis 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 idiy (type, in herb. N. Y. Bot. Gard.). 



Alberta: Devil's Head Lake, Aug. 8, 1891, Macoun 114-52 

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

 stacliyum. 



New York Botanical Garden. 



