No. 99. 



ELYMUS TRITICOIDES Nutt. in Buckl. Proc. Acad. Phila. for 1862, 99 



(1802). 



Plant perennial, from a strong rootstock. 



Culms erect, often branching at the base, leafy throughout, smooth, 3 to 5 feet tall- 



Leaves of the culm 5 to 7 ; sheaths striate, smooth, usually exceeding the inter- 

 nodes; blades flat, or involute toward the points, striate, smooth beneath, hispid and 

 often thiuly pubescent above, 2 to 4 lines wide, 6 to 12 inches long; ligule obtuse, £ 

 line long or less. 



Inflorescence an erect, spicate panicle, usually somewhat interrupted or loosely 

 flowered, 4 to 8 inches long, with 1 to 3 spikelets at each node of the rachis, usually 

 exceeding the internodes. 



Spilcelets 5- to 10-flowered, 7 to 10 lines long; first empty glume subulate, hispid, 

 1-nerved, rigid, 4 to 6 lines long; second empty glume very narrowly ovate, rigid, 

 hispid, 3-nerved below, about 1 line longer than the first; floral glume lance-ovate, 

 acute or more often distinctly awned, smooth below, hispid near the apex, 7-nerved, 

 4 to 5 lines long; palet lance-oblong, obtuse or emarginate, hispid on the prominent 

 green keels and minutely ciliate on the margins above, two-thirds as long as the glume; 

 stamens 3, not exserted ; ovary pubescent. 



Plate XCIX; a, spikelet; b, floral glume, dorsal view; c, palet opened. 



California to Washington. 



