308 MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



panicle pyramidal, 5 to 15 cm long, rather open, the lower branches in 

 whorls, ascending, naked below, 3 to 5 cm long; spikelets pale or 

 tinged with purple; glumes acuminate, 6 to 7 mm long; lemma acu- 

 minate, a little shorter than the glumes, the awn attached about 2 mm 

 above the base, geniculate, exserted about 1 cm; callus hairs and those 

 of the rachilla about half as long as the lemma. 91 On perpendic- 

 ular cliffs, vicinity of the Gap of the Columbia Kiver. ' 



3. CalamagrostisbreweriThurb. SHORTHAIR. (Fig. 611.) Culms 

 densely tufted, slender, erect 15 to 30 cm tall; leaves mostly basal, 



FIGURE 6Q9.Calamagrostis bolanderi. Panicle, X 1; glumes and floret, X 10. (Bolander, Calif.) 



usually involute-filiform; panicle ovate, purple, 3 to 8 cm long, the 

 lower branches slender, spreading, few-flowered, 1 to 2 cm long; 

 glumes 3 to 4 mm long, smooth, acute; lemma nearly as long as 

 glumes, cuspidate-toothed, the awn from near the base, geniculate, 

 exserted, twisted below, about 2 mm long above the bend, the callus 

 hairs short, scant; rachilla long-pilose, about half as long as the 

 lemma. 9i Mountain meadows of the high Sierra Nevada, Calif., 

 where it is an important range grass. 



