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



spikelets (excluding the awns) 3 to 4 mm long, the glumes about half 



as long, broad at base, abruptly 

 acuminate, scaberulous ; lemma nar- 

 row, pubescent toward the base, 

 tapering into a slender straight awn 

 3 to 10 mm long. % — Rocky 

 woods, Ontario and Vermont to 

 Iowa, south to Virginia, Tennessee, 

 and Oklahoma (fig. 765). 



24. Muhlenbergia brachyphylla 

 Bush. (Fig. 766.) Perennial, with 

 numerous slender scaly rhizomes; 

 culms slender, suberect, freely 

 branching at the middle nodes, 

 the branches lax, glabrous or ob- 

 scurely scabrous below the nodes; 

 blades flat, spreading, scaberulous, 

 mostly 7 to 15 cm long and 3 to 

 5 mm wide; panicles on filiform 

 peduncles, very slender, lax, rela- 

 tively few-flowered, mostly 8 to 15 

 cm long; spikelets, excluding the 

 awn, about 3 mm long, the glumes 

 about two-thirds as long, awn- 

 tipped; lemma minutely pubescent 

 toward the base, tapering into a 

 slender awn 3 to 6 mm long, rarely 

 shorter. % ■ — Low woods, Indiana 

 to Nebraska, south to Texas (fig. 

 767). Resembling M. tenuifiora 



but with numerous filiform branches and more slender panicles. 



Figure 761. — Muhlenberqia californka. Plant, X 

 1; glumes and floret, X 10. (Parish 2113, Calif.) 



Figure 762.-^1, Muhlenbergia sobolifera. Plant, X 1; glumes and floret, X 10. (Metcalf 1E89, N.Y.) 



B, Var. setigera, X 10. (Reverchon 1049, Tex.) 



25. Muhlenbergia racemosa (Michx.) B.S.P. Marsh muhly. 

 (Fig. 768.) Perennial, from stout creeping scaly rhizomes; culms 

 erect or reclining, 50 to 100 cm tall, or even more, slightly roughened 



