114 Rhodora [May 
crowded, 2 to 5 cm. long, 2 to 4 mm. wide. Primary panicle exserted, 
8-12 cm. long, ovoid, its capillary branches ascending, the lower ones 
6-8 cm. long; secondary panicles much smaller, lax, few-flowered, 
3-4 cm. long. Spikelets ovate, acute or obtuse, 1.5 mm. long, on 
elongated, capillary, sparingly scabrous pedicels; first glume about 
one-third as long as the spikelet, acute; second and third glumes 
green or purplish, glabrous or sometimes pubescent, faintly 7-nerved. 
General distribution : in damp soils, thickets, etc. Massachusetts, 
Ohio, Illinois, and Missouri, south to Florida and Texas. May to 
September. 
MASSACHUSETTS : Nonquit, woods, 36 Æ. Z. Sturtevant, Aug. 24, 
1888, July 19, 1889, and August 4, 1889; Dartmouth, Æ. Z. Sturtevant, 
Sept. rs, 1899; West Quincy, Blue Hills, 7. R. Churchill, July 11, 
1891; Blue Hills, W. ZZ. Manning, August 11, 1894. RHODE ISLAND: 
Providence, swamp, J. F. Collins, June 27, 1891. CONNECTICUT: 
Hartford, frequent, 4 4. W. Driggs, July 27, 1900. 
21. PANICUM MATTAMUSKETENSE Ashe, Journ. E. Mitch. Sci. Soc. 
15:45. 1898. (Panicum discolor var. major Muhl. Gram. 115. 1817, 
not Panicum nitidum var. majus Pursh, Fl. Am. Sept. 1 : 67. 1814). 
An erect, rather stout, somewhat tufted perennial, 6-12 dm. high, with 
rather thin, glabrous, lanceolate leaves, and pubescent spikelets. 
Culms glabrous, erect, simple or slightly branched below; nodes 
strongly bearded. Sheaths much shorter than the internodes, gla- 
brous, or the lower one sparingly pilose, ciliate on the margins; 
ligule a short ciliate fringe; leaf-blades spreading, scabrous on the 
margins, otherwise smooth, 8—14 cm. long, 8-14 mm. wide, acuminate 
somewhat narrowed to the slightly clasping base, pubescent on the 
back where it joins the sheath. Panicle exserted, ovoid, 8-14 cm. 
long, branches fasciculate, spreading or ascending, the lower ones 
often flexuous. Spikelets ovate, often purplish, about 2.2 mm. long, 
first glume acute, about one-fourth as long as the spikelet ; second 
and third glumes pubescent with scattered spreading hairs. 
General distribution: In damp open woods, Massachusetts, 
North Carolina and Georgia, Tune to July. : 
MassacHusETTs : Wellesley, W. P. Rich, June 14, 1899. 
| || Nodes naked or with only a few spreading hairs. 
X Spikelets glabrous. 
22. Panicum picHoromuM Linn. Sp. Pl. 58. 1753 ? (Panicum 
dichotomum viride Vasey, U. S. Dept. Agr. Div. Bot. Bul. 8: 30. 
1889; Panicum ramulosum viride Porter, Bul. Torr. Bot. Club, 20: 
194. 1893.) — A slender, glabrous, somewhat wiry perennial, 2 to 6 
dm. high, finally much branched above, with pale green spreading 
leaves and open panicles. Culms erect, slender, often purple ; nodes 
smooth or with few long, weak hairs, Sheaths shorter than the in- 
ternodes, smooth; ligule a short ciliate ring ; leaf-blades thin, gla- 
