MANUAL OF THE GRASSES OF THE UNITED STATES 



319 



FIGURE 638. Distribution of 

 Calamagrostis inexpansa. 



CALAMAGROSTIS CALIFORNICA Kearney. (Fig. 639.) Resembling 

 C. inexpansa but panicles longer and somewhat looser and callus hairs 

 shorter. 91 Known only from the type specimen, " Sierra Nevada." 

 The status of this form is doubtful. 



21. Calamagrostis neglecta (Ehrh.) Gaertn. 

 Mey. and Schreb. (Fig. 640.) Resembling C. 

 inexpansa, on the average smaller; ligule 1 to 

 3 mm long; blades smooth or nearly so, lax and 

 soft, narrow, often filiform; panicles on the 

 average smaller; glumes rather thinner in 

 texture, often smooth. 9t Marshes, sandy 

 shores, and wet places, Greenland to Alaska, 

 south to Maine, Vermont, New York, Michigan, Wisconsin, Colorado, 

 Utah, and Oregon (fig. 641); northern Eurasia. 



22. Calamagrostis crassiglumis Thurb. 

 (Fig. 642.) Culms rather rigid, 15 to 40 

 cm tall, with short rhizomes; lower sheaths 

 overlapping, somewhat papery; blades 

 flat, or somewhat involute, smooth, firm, 

 about 4 to 5 mm wide; panicle narrow, 

 dense, spikelike, 2 to 5 cm long, dull pur- 

 ple; 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 reach- 

 ing to apex of lemma. 91 Swampy 

 soU, Vancouver Island, Washington (What- 

 FIGURE 639 -co/a- com Lake), California (Mendocino 

 County) A rare species allied to C. inex- 

 pansa and C. neglecta. 

 23. Calamagrostis epigeios (L.) Roth. (Fig. 643.) Culms slender, 

 1 to 1.5 m tall, with creeping rhizomes; ligule about 4 mm long, rather 

 firm; blades elongate, mostly 4 to 5 mm wide, flat, scabrous; panicle 

 pale, erect, narrow, rather dense, 25 to 30 cm 

 long, narrowed at the summit; glumes sub- 

 equal, 4 to 5 mm long, narrowly lanceolate- 

 attenuate; lemma 2 to 2.3 mm long, strongly 2- 

 toothed at the opaque apex, the awn from a little 

 below the middle, about as long as the glumes, 

 somewhat bent at the middle; callus hairs 

 rather copious, about as long as the glumes; 

 rachilla obsolete. 91 (C. arenicola Fernald.) 

 Sandy woods in dense colonies, Harwich, Mass. ; said to be establish- 

 ed also at Gloucester, Mass., and Montgomery County, Pa.; Eurasia. 



62. AMMOPHILA Host. BEACHGRASS 



Spikelets 1 -flowered, compressed, the rachilla disarticulating above 

 the glumes, produced beyond the palea as a short bristle, hairy 

 above; glumes about equal, chartaceous; lemma similar to and a 



55974-35 21 



FIGURE 641. Distribution of 

 Calamagrostis neglecta. 



