MANUAL OF THE GRASSES OF THE UNITED STATES 



327 



withering but persistent; ligule 4 to 

 6 mm. long; blades firm, rather rigid, 

 flat or loosely involute, very sca- 

 brous, 2 to 4 mm. wide; panicle nar- 

 row, dense, the branches mostly 

 erect and spikelet-bearing from the 

 base; 5 to 15 cm. long; glumes 3 to 

 4 mm. long, abruptly acuminate, sca- 

 berulous; lemma as long as glumes, 

 scabrous, the awn attached about 

 the middle, straight or nearly so, 

 about as long as glumes, the callus 



— Meadows, marshes, and wet places, 

 Greenland to Alaska, south to Maine, 

 Virginia (Mountain Lake), Washing- 

 ton, New Mexico, and California. 

 Calamagrostis inexpansa var. no- 

 vae- angliae Stebbins. Panicle more 

 loosely flowered, the longer branches 

 naked below. % — Wet granite 

 ledges, Maine to Vermont. Calama- 

 grostis INEXPANSA Var. BARBULATA 



Kearney. Culms robust, puberulent 

 below the nodes; collar of sheaths 



Figure 447. — Calamagrostis inexpansa. Panicle, X 1: 

 glumes and floret, X 10. (Ehlers 566, Mich.) 



Figure 448. — Calamagrostis californica. Glumes and 

 floret, X 10. (Type.) 



hairs half to three-fourths as long; 

 rachilla 0.5 mm. long, some of the 

 hairs reaching to tip of lemma. % 



Figure 449. — Calamagrostis ne- 

 ecta. Glumes and floret, X 10. 

 (Fernald 182, Maine.) 



puberulent; awn minute or obsolete, 

 callus hairs nearly as long as the 

 lemma. % — Known only from 

 Mason County, Wash. 



26. Calamagrostis californica 

 Kearney. (Fig. 448.) Related to C. 

 inexpansa, but foliage softer and pan- 

 icle longer and looser; ligule 2 to 3 

 mm. long; blades elongate, 1 to 4 

 mm. wide, mostly involute, scabrous 

 on the upper surface, smooth be- 

 neath; panicle 18 to 22 cm. long, 

 the densely flowered branches in 

 rather distant fascicles, some of them 

 naked at base for 1 to 2.5 cm., the 

 axis glabrous; spikelets 3.9 to 4.2 

 mm. long; glumes acuminate,, sca- 

 brous; lemma nearly as long as the 

 glumes, strongly nerved, scabrous, 

 the awn attached a little below the 

 middle, straight, scarcely equaling the 

 lemma, the callus hairs scarcely half 

 as long as the lemma, the palea and 

 the hairs of the rachilla about three- 



