Muhlenbergia sylvatica Torr.

Muhlenbergia sylvatica Torr. ; Trin. Mem. Acad. St.-Petersb
VI. 6-: 292 (reprint 46). 1841.
/Igi-Oi/JS (/i^Msa Muhl. Descr. Gram. 64. 1817. (Type from Pennsylvania.) Hoi A. difusa Host.
1809. Agrostis sylvalica Torr. Fl. U. S. 1: 87. 1823. (Basis of Muhlenbergia sylvalica Torr.) Not A.
sylvatica L. 1762. Muhlenbergia sylvalica var. gracilis Scribn. Trans. Kansas Acad. 9; 1 16. 1885. (Type from Topeka,
Kansas.) Muhlenbergia umbrosa Scribn. Rhodora 9: 20. 1907. (Based on Agroslis sylvalica Torr.) Muhlenbergia umbrosa var. aUenuata Scribn. Rhodora 9: 21. 1907. (Type from Aurora County,
.South Dakota, Wilcox 25; awn reduced or wanting.) Muhlenbergia diffusa Farwell, Rep. Mich. Acad. 20: 16S. 1918. (Based on Agroslis diffusa Muhl.)
Not M. diffusa WWW. 1797. Muhlenbergia umbrosa f. atlenuata Deara, Grasses Ind. 171. 1929. (Based on M. umbrosa var.
aUenuata Scribn.)
Perennial, with creeping scaly rhizomes, resembling M. mexicana in habit, freely branching, the branches more slender and lax ; culms retrorsely scabrous below the nodes ; sheaths glabrous ; ligule about 0.5 mm. long; panicles slender, nodding, 5-15 cm. long, the branches distant, appressed, overlapping or the lower scarcely so; glumes lanceolate, rather abruptly acuminate or awn-pointed, about 2 mm. long; lemma a little longer than the glumes, somewhat pilose below, tapering into an awn 5-10 mm. long. Awn sometimes reduced or wanting.
Type locality: MountaiHs of New Jersey.
Distribution: Moist woods and thickets, Maine to South Dakota, and southward to Alabama and Texas; Arizona.