MANUAL OF THE GRASSES OF THE UNITED STATES 



319 



Calamagrostis califorxica Kearney. (Fig. 639.) Resembling 

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

 shorter. % — 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. % — Marshes, sandy figure 638.-pistnbution of 



i ; •, n ^ 1 -i , a i i Calamagrostis inexpansa. 



snores, 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 

 soil, Vancouver Island, Washington (What- 

 m.-caia- com Lake), California (Mendocino Fl m lgrl s f^ g feda 

 n7aS.(ffi" County). A rare species allied to C. inex- ^° M g^ r } QaM 



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- 

 eo x ual, 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. % — (<?. arenicola Fernald.j 

 —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, hairv 

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



55974°— 35 21 







.• 



Figure 641.— Distribution of 

 Calamagrostis neglecta. 



