1901] Scribner & Merrill,— New England Panicum IOI 
A. Basal and culm leaves all similar in shape, spikelet acute. (Homo- 
PHYLLA.) 
* Panicle ovoid or oblong, primary branches spreading or ascending, second- 
ary ones usually appressed, and densely flowered : spikelets short-pedicellate, 
not exceeding 3 mm. in length. 
4. PANICUM AGROSTOIDES Sprengel, Pugill. 2: 4. 1815—Muhl. 
Gram. 119. 1817.—An erect, caespitose, glabrous, much branched 
perennial 4-6 dm. high, with compressed culms, long leaves and 
spreading pyramidal panicles ro-20 cm. long. Nodes smooth; 
sheaths compressed, loose, shorter than the internodes; ligule very 
short, naked; leaf-blades 3-5 dm. long, 4-8 mm. wide, acuminate, 
scabrous on the margins. Panicles terminating the culms or their 
branches, usually purplish, primary branches spreading, the 
secondary generally appressed and densely flowered giving the pan- 
icle a glomerate appearance.  Pedicels scabrous, usually bearing few 
long white hairs at the apex. Spikelets nearly 2 mm. long, ovate, 
acute; firsteglume 3-nerved, acute, slightly scabrous on the keel at 
the apex, about one-half as long as the spikelet; second and third 
glumes equal, 5-nerved, acute, slightly scabrous on the keel, the third 
enclosing a hyaline palea about 1.2 mm. long, flowering glume ovate, 
about 1.3 mm. long, smooth. Palea as long as the glume, similar in 
texture. 
General distribution: in wet grounds Maine to Minnesota, south to 
Florida and Texas, July to September. 
MAINE: Bradley, Chemo Pond, F. P. Briggs, Sept. 1891; Brown- 
field, old fields, E. D. Merrill, Aug. 18, 1896; Denmark, intervales 
of the Saco River, W. H. Merrill, 1894; North Berwick, shores of 
mil-pond, 751 7. C. Parlin, Aug. 19, 1896; Androscoggin Lake, 
' Kate Furbish, 1894. New HAMPSHIRE: Rye Beach, W. Deane, 
Aug. 29, 1886. MassacuusETTs: Malden, Æ. Frohock, 1880; Blue 
Hills, W. H. Manning, Aug. 23, 1894; Winchester, W. P. Rich, 
Aug. r9, 1888, and Aug. 5, 1894; Lynn, IW. P. Rich, Aug. 25, 1889; 
Milton, 7. AR. Churchill, Sept. 18, 1887; Cambridge, W. Deane, 
Aug. 24, 1883; Andover, J. Blake, Aug. 14, 1882; Newburyport, 
W. P. Conant, no date. RHopE ISLAND: Providence, 7. Blake, 
Sept. 10, 1857. CoNNEcrTICUT: New Haven, 7. 4. Allen, Sept. 19, 
1877; Southington, 621 Z. Andrews, Aug. 18, 1898; Huntington, 
E. H. Eames, Aug. 6, 1895. 
5. PANICUM LONGIFOLIUM Torr. Fl. U. S. 149. 1824. — An erect 
glabrous perennial 3-6 dm. high, with simple or rarely slightly 
branched slender culms, elongated narrow leaves and few-flowered 
panicles 10-20 cm. long. Culms compressed ; nodes smooth; sheaths 
loose, compressed, glabrous, shorter than the internodes; ligule short, 
ciliate with erect white hairs 1-2 mm. long; leaf-blades 20-30 cm. 
long, 2-4 mm. wide, usually scabrous, long acuminate. Panicles 
open; primary branches spreading or ascending, elongated, slender; 
