MANUAL OF THE GRASSES OF THE UNITED STATES 



385 



48., Muhlenbergia capillaris (Lam.) Trin. (Fig. 802.) Perennial, 



in tufts; culms rather 

 slender, erect, 60 to 100 cm 

 tall; sheaths scaberulous, at 

 least toward the summit, 

 and with auricles mostly 3 

 to 5 mm long; blades elon- 



FIGURE 791. Muhlen berg ia torreyi. 

 Plant, X 1; glumes and floret, X 10. 

 (Chase 5298, Colo.) 



the branches capillary, flex- 

 uous, the branchlets and 

 pedicels finally spreading ; 

 spikelets, excluding awns, 

 3 to 4 mm long, the glumes 



FIGURE 795. Distribution of 

 Muhlenbergia torreyi. 



gate, flat or involute, 1 to 4 

 mm wide, those of the inno- 

 vations narrower, involute; 

 panicle purple, oblong dif- 

 fuse, one-third to half the 

 entire height of the culm, 



FIGURE 797. Distribution of 

 Muhlenbergia arenicola. 



one-fourth to two-thirds as 

 long, acute, the second often 

 short-awned ; lemma scaber- 

 ulous, minutely hairy on the 

 callus and with a delicate 

 awn 5 to 15 mm long. 01 Rocky or sandy woods, Massachusetts to 



FIGURE 796. Muhlenbergia arenicola. Plant, X 1; glumes 

 and floret, X 10. (Hitchcock 13602, Tex.) 



