Rydberg : RocKv Mountain flora 539 



mens were originally referred. B. Flodmanii differs from B. 

 marginatus latior in the scabrous, not pilose floral glumes, and the 

 narrow inflorescence ; from B. alaitensis it differs in the shorter 

 awns, the smaller florets, and the less open inflorescence, and from 

 B. Hookerianiis in the smaller spikelets, shorter awns, and narrower 

 scarious margins of the floral glumes. It agrees very well with 

 the description and figure of CcratocJiloa brcviaristata Hook., but 

 the palet is nearly as long as the floral glume. 



Montana: Sheep Creek, Aug. 8, 1896, /. H. Flodvian iSy 

 (type, in herb. N. Y. Bot. Gard.) ; same locality and date, Rydberg 

 3308. 



Utah : Mount Nebo, 1905, Rydberg & Carlton 7S95- 

 Wyoming: Buffalo Fork, 1897, F. Tiveedy 6§. 



Agropyron latiglume (Scribn. & Smith) sp. nov. 



Agropyron violaccuni latighiiiic Scribn. & Smith, U. S. Div. Agrost. 

 Bull. 4 : 30. 1897. 



Agropyron inerme (Scribn. & Smith) sp. nov. 



Agropyron divergens iner7)ns\y\ Scribn. & Smith, U. S. Div. 

 Agrost. Bull. 4 : 27. 1897. 



Hordeum depressum (Scribn. &. Smith) sp. nov. 



Hordemn nodosum depressum Scribn. & Smith, U. S. Div. Agrost. 

 Bull. 4 : 24. 1897. 



Elymus jejunus (Ramaley) sp. nov. 



Elymiis virginiens jejuiuis Ramaley, Minn. Bot. Stud, i: 114. 



1894. 

 Elynuis virginiens minor Vasey ; Rydb. Contr. U. S. Nat. Herb. 



3: 193. 1895. 



This was well described by Professor Ramaley. The descrip- 

 tion was overlooked when I a year later took up Dr. Vasey's 

 manuscript name. 



Elymus marginalis sp. nov. 



Perennial, with a rootstock, somewhat tufted ; stem 6—10 dm. 

 high, glabrous or pubescent at the nodes ; sheaths close, at least 

 the lower ones retrorsely pilose ; leaf-blades spreading, 1-2 dm. 



