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



nodes as in M. sylvatica; blades numerous, short, narrow, appressed; 



panicles on the average shorter and narrower than in M. mexicana; 



spikelets about as in M. 

 mexicana but the lemma 

 glabrous. 91 Low 

 woods, Maryland, Indi- 

 ana, Illinois, Missouri, 

 and Texas (fig. 773). 



28. Muhlenbergia syl- 

 vatica Torr. (Fig. 774.) 

 Resembling M. mexicana 

 in habit, the branches 



FIGURE 767. Distribution of 

 Muhlenbergia brachyphylla. 



usuaUy more slender 

 and lax ; culms retrorsely 

 scaberulous below the 

 nodes; panicles slender, 

 nodding, the branches 

 distant, appressed, over- 

 lapping, or the lower 

 scarcely so; glumes 

 lanceolate, rather ab- 



FIGURE 766. Muhlenbergia brachyphylla. Plant, X 1; glumes ,1 



and floret, x ID. (v. H. chase 3759, 111.) ruptly acuminate or awn- 



pointed, about 2 mm 



long; lemma a little longer than the glumes, somewhat pilose 

 below, tapering into an awn 5 to 10 mm long. 01 (M. umbrosa 

 Scribn.) Moist woods and thickets, Maine 

 to South Dakota, south to Alabama and 

 Texas; Arizona (fig. 775). Awns some- 

 times reduced or wanting. 



29. Muhlenbergia foliosa (Roem. and 



Schult.) Trin. (Fig. 



7 76.) Resembling M. 



mexicana and M. 



sylvatica in habit; 



culms scaberulous 



below the nodes; 



panicles mostly ex- 



serted, often rather 



long-exserted, nar- 

 row, of numerous short appressed 



densely flowered somewhat aggregate FlGmEm .- Mu hienbergiarace m osa. 

 branches; spikelets 2 to 3 mm long; Plant, x i; glumes and floret, x 



1 j. j i / 10. (Macoun 26241, Ont.) 



glumes narrow, attenuate into a short 



awn, about as long as the acuminate to awn-tipped lemma, 



the lemma long-pilose below. ^ Moist thickets, low woods, 



FIGURE 769. Distribution of 

 Muhlenbergia racemosa. 



