POACEAE 99 
3a. Muhlenbergia racemosa (Michx.) B. S. P. [M. glomerata Trin.] has been 
reported from Statesville, N. C. (Chapm NE Its panicle is dense and the 
glumes race exceeding the awnless lemm 
4. M. umbrosa Seribn. Stem 30-100 em. cae p 5-15 em. long, narrow, 
ie branches appress ped or ascending: glum mm. long, awn-pointed: 
wn of lemma 5-15 mm. long. [M. sylvatica “Torr. ]—Moist woods, various 
ce N.C.t o Tex., Minn., and N. B. 
5. M. Ads Trin. Stem erect, 30—100 em. tall: panicle slender, ~ 
5-15 em. long: spikelets 3—4 mm. long.—Swamps, various provinces, N. C. 
Ariz., Mont., and Me. 
6. M. Schreberi Gmel. Stem decumbent or prostrate, slender and wiry, 
diffusely branched: leaf-blades mostly 1-3 mm. wide: panicle m 20 em. long, 
slender, rather lax: glumes minute, the first often wantin lemma E 
2 mm. long, the awn 1-4 mm. long. [M. diffusa Willd ]— Nue. -WILL.)— 
Low ground, moist woods, thickets, and cult. grounds, various provinces, Fla. 
to Tex. Nebr., and N. H.—(Mez.) 
7. M. expansa M Trin. Stems tufted, erect, rd em. tall: leaf-blades 
flat, 2-3 mm coming involute: panicle 20-40 e . long, about half as 
wide, oblong, ‘the branches ascending: lemma 4—5 mm. mum the glumes acumi- 
nate, half to 24 as long, the awn usually minute.  [M. trichopodes Chapm. 
M. caespitosa Chapm. M. Reverchoni (Fl. SE. U.S.).]—Pinelands, Coastal 
Plain, Fla. to La. and N. C. 
8. M. Me (Lam.) T Resembles M. expansa, but stems not so tall: 
panieles more diffuse, br ede. the capillary branches somewhat flexuous and 
implieate: ie: shorter (long-aw -awned in M. capillaris filipes) : awn of mise 
5-15 mm. long.—(HAIR-GRASS.)—Dry pin ~ ate meadows, and stre 
banks Coastal Plain and adj. provinces, Fla. to Tex., Okla., nnd Mass. S.— 
(W. I.)—Grows in large tufts. 
51. n OO Beauv. Erect slender perennials with short 
knotty rootstocks, flat blades and narrow rather few-flowered panicles. Spi 
lets 1-flowered: rachilla ae ed behind 
the palea a slender naked bristle; 
glumes very en unequal, the first often 
obsolete, the second sometimes awned; 
lemma fi j 
oblique cals: the apex terminating in a 
long straight awn.—One species. 
1. B. erectum (Schreb.) Beauv. 
100 em. tall: leaf-sheaths dud Eo. 
hispid: blades 10-20 em. long, 1-2 ide: 
iele em. lo 
ong: 
awn 1-2 em. long. [Muhlenbergia erecta 
Schreb. Dilepyrum erectum Farwell] — 
Rocky woods, various provinces, Ga. to Okla., Minn., and Newf. 
