MANUAL OF THE GRASSES OF THE UNITED STATES 



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apex of the spike, mostly 2- to 4-flow- 

 ered; glumes subulate, scabrous 

 toward the awned tip; lemmas gla- 

 brous or scabrous on the back, about 

 1 cm. long, short-awned, the awn 2 

 to 5 mm. long. % — Open slopes at 

 medium altitudes in the mountains, 

 Montana, Colorado, and Utah. Ely- 

 mus ambiguus var. strigosus (Rydb.) 

 Hitchc. Lemmas strigose or pub- 

 escent. % (E. strigosus Rydb., 

 lemmas strigose; E. villiflorus Rydb.) 

 lemmas pubescent.) — Wyoming, Col- 

 orado. 



12. Elymus salinus Jones. Salina 

 wild-rye. (Fig. 343.) Culms erect, 30 

 to 80 cm. tall, sometimes scabrous be- 

 low nodes and below spike; sheaths 

 scabrous; blades firm, involute, sca- 

 brous, or rarely softly pubescent; 

 spike slender, erect, 5 to 12 cm. long; 

 spikelets mostly solitary, often rather 

 distant, 1 to 1.5 cm. long; glumes sub- 

 ulate, 4 to 8 mm. long, sometimes re- 

 duced, glabrous or scabrous; lemmas 

 about 1 cm. long, awnless or rarely 

 awn-tipped, glabrous or scabrous, 

 rarely sparsely strigose, the nerves 

 obscure. 91 — Rocky slopes and 

 sagebrush hills, Wyoming and Col- 

 orado to Idaho, Nevada, and southern 

 California. 



13. Elymus condensatus Presl. 

 Giant wild-rye. (Fig. 344.) Culms 

 robust, in large tufts, usually 2 to 3 

 m. tall, with short thick rhizomes; 

 ligule 2 to 5 mm. long; blades firm, 

 strongly nerved, flat, as much as 3 

 cm. wide; spike erect, dense, 15 to 50 

 cm. long, usually more or less com- 

 pound, the branches erect, 2 to 7 cm. 

 long; spikelets often in threes to fives, 

 commonly distorted by pressure; 

 glumes subulate, awn-pointed, usu- 

 ally 1-nerved or nerveless, about as 

 long as the first lemma, sometimes 

 longer; lemmas glabrous to sparsely 

 strigose, with a hyaline margin, awn- 

 less or mucronate. % — Sand 

 dunes, sandy or rocky slopes, moist 

 ravines, mostly near the coast, Ala- 

 meda County to San Diego County, 

 Calif., and on the adjacent islands off 

 the coast. 



m 



Figure 341. — Elymus simplex, X 1. (Type.) 



Figure 343. — Elymus 

 salinus, X 1. (Ryd- 

 berg 2041, Wyo.) 



W. 



Figure 342. — Elymus 

 ambiguus , X 1 . 

 (Hitchcock 1099 0, 

 Colo.) 



