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



fourths as long. % — Only known 

 from a single collection from the 

 Sierra Nevada, particular locality not 

 known. 



27. Calamagrostis neglecta (Ehrh.) 

 Gaertn. Mey. and Schreb. (Fig. 449.) 

 Resembling C. inexpansa, on the 

 average smaller; ligule 1 to 3 mm. 

 long; blades smooth or nearly so, lax 

 and soft, narrow, often filiform; pan- 

 icles on the average smaller; glumes 

 rather thinner in texture, often smooth 

 % — Marshes, sandy shores, and 

 wet places, Greenland to Alaska, 

 south to Maine, Vermont, New York, 

 Michigan to Washington, Colorado, 

 and Oregon; northern Eurasia. 



Figure 450. — Calamagrostis crassiglumis. Panicle, 

 X 1; glumes and floret, X 10. (Suksdorf 1024, 

 Wash.) 



28. Calamagrostis crassiglumis 



Thurb. (Fig. 450.) Culms rather rigid, 

 15 to 40 cm. tall, with short rhi- 



zomes; lower sheaths overlapping, 

 somewhat papery; blades flat, or 

 somewhat involute, smooth, firm, 

 about 4 to 5 mm. wide; panicle nar- 

 row, dense, spikelike, 2 to 5 cm. long, 

 dull purple; glumes 3 to 4 mm. long, 

 ovate, rather abruptly acuminate, 

 purple, scaberulous, firm or almost 

 indurate; lemma about as long as 

 glumes, broad, obtuse or abruptly 

 pointed, the awn attached about the 

 middle, straight, about as long as 

 lemma, the callus hairs abundant, 

 about 3 mm. long; rachilla 1 mm. 

 long, the hairs reaching to apex of 

 lemma. % — Swampy soil, Van- 

 couver Island, Washington (What- 

 com Lake), California (Mendocino 

 County). A rare species allied to C. 

 inexpansa and C. neglecta. 



29. Calamagrostis epigeios (L.) 

 Roth. (Fig. 451.) Culms 1 to 1.5 m. 

 tall, with extensively creeping rhi- 

 zomes; ligule about 4 mm. long, rather 

 firm; blades elongate, 4 to 8, some- 

 times to 13 mm. wide, scabrous; pan- 

 icle pale, erect, narrow, rather dense, 

 25 to 35 cm. long; spikelets crowded; 

 glumes subequal, mostly 5 to 6 mm., 

 sometimes to 8 mm., long, narrowly 

 lanceolate, attenuate; lemma scarcely 

 half as long as the glumes, 2-toothed 

 at the apex, the awn mostly from be- 

 low the middle, delicate, often ob- 

 scure, slightly bent, about as long as 



Figure 451. — Calamagrostis epigeios. Panicle, X 1; glumes and floret, X 10. (Fernald 757, Mass.) 



