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



Scribn. and A I err.) — Bogs and wet 

 meadows, Newfoundland to Alichi- 

 gan and New Jersey. 



30. Muhlenbergia dumosa Scribn. 

 (Fig. 549.) Perennial, with short, 

 stout creeping scaly rhizomes; culms 

 robust, solid, thick, and scaly 

 at base (here as much as 6 mm. 

 thick), the main culm erect or lean- 

 ing, 1 to 3 m. tall, the lower part 

 clothed with bladeless sheaths, freely 

 branching at the middle and upper 

 nodes, the branches numerous, fas- 

 cicled, spreading, decompound, the 

 ultimate branchlets filiform; blades 



Figure 547. — Muhlenbergia torreyana. Plant, X 1; 

 glumes and floret, X 10. (Vasey, X. J.) 



berulous-puberulent. % (Sporobo- 

 lus compressus Kunth; S. torreyanus 

 Nash.) — Moist pine barrens and 

 meadows, New Jersey and Delaware; 

 Georgia (Sumter County), Kentucky, 

 and Tennessee. 



29. Muhlenbergia uniflora (Muhl.) 

 Fernald. (Fig. 548.) Perennial, but oft- 

 en appearing like an annual, tufted, oft- 

 en with decumbent bases; culms slen- 

 der, erect, 20 to 40 cm. tall, the base 

 and lower sheaths compressed ; blades 

 flat, crowded along the lower part 

 of the culm, about 1 mm. wide; 

 panicle loose, open, oblong, 7 to 20 

 cm. long, 2 to 4 cm. wide, the branches 

 and pedicels capillary; spikelets dark 

 purplish, about 1.5 mm. long, rarely 

 2-flowered; glumes scarcely half as 

 long as the spikelet, subacute; lemma 

 faintly 3-nerved, acutish. % (Spo- 

 robohis serotinus A. Gray; S. uniflorus 



Figure 548. — Muhlenbergia uniflora. Plant, X 1; 

 glumes and floret, X 10. (Chamberlain 147, Maine.) 



