Rhbodora 
JOURNAL OF 
THE NEW ENGLAND BOTANICAL CLUB 
Vol. 9. February, 1907. No. 98 
NOTES ON MUHLENBERGIA. 
F. Lamson-ScrRIBNER. 
A critical study of eastern species of Muhlenbergia as represented 
by the material in the National Herbarium, has led to a somewhat 
new classification of the species heretofore recognized and the segre- 
gation of several subspecies and one new species. ‘The results of this 
study are here presented. ; 
SECTION 1. Glumes minute, the first sometimes obsolete. Muhlen- 
bergia proper. 
1. MUHLENBERGIA SCHREBERI Gmel. Syst. Nat. 2:171. 1791. 
M. diffusa Willd. Enum. 1:81. 1809; Schreb. Gram. 2:143. 
Pl. 51. 1810. 
la. MUHLENBERGIA SCHREBERI curtisetosa Scribn. n. subsp. 
Panicles 3-12 cm. long; spikelets 2.5-3 mm. long; glumes 
unequal, the first ovate, obtuse, about 1 mm. long, the second 
ovate or ovate-lanceolate, obtuse, acute or abruptly mucronate- 
pointed, 1-2 mm. long; lemmas short-awned; awns 1 mm. or 
less in length. Type collected by J. Wolf in Illinois in 1881. 
Other specimens in the Natl. Herb.; Illinois, J. Wolf, 1882, 
Champaign, Illinois, G. P. Clinton, 1892. No. 204 A. Commons 
from Centerville, Delaware, apparently belongs here. 
lb. MUHLENBERGIA SCHREBERI palustris Scribn. n. comb. Muhlen- 
bergia palustris Scribn. U. S. Dept. Agric. Div. Agros. Bul. 11: 47. 
1898. Culms filiform; sheaths naked at the throat; both glumes 
manifest; awns 5-6 mm. long. Swamps, Brightwood, District 
of Columbia (Type locality). 
SEcTION 2. Glumes ovate, acute, much shorter than the lemmas. 
(Stenocladium Trin. Fund. Agros. 117, as a section of Trichochloa.) 
2. MUHLENBERGIA SOBOLIFERA (Muhl.) Trin. Gram. Unifi. 189. 
