30 JOURNAL OF THE 
base, taper-pointed, glabrous except the rough margins, 
9—13-nerved, those on the branches much smaller. 
Panicle 3—S long, oval, the numerous branches spread- 
ing, many-flowered ; spikelets 14” long, elliptical. 
Very common near the banks of streams. Related to P. scabriuscu- 
lum. Torrey’s P. pedunculatum represents the early form. New York: 
Ashe: Watkins, Jigy, 1898. Florida: Chapman; Apalachicola. 
Missouri: egert: St. Louis, 1897, Michigan: Sartwell; De- 
troit, 1892. North Carolina: Ashe; Wilmington, 1894, 
5) PANICUM COMMUTATUM Schultes, Mant. 2: 24 
(1824). FP. nervosum Ell. Sk. 1:122, Not Lam. VP. ner- 
vosum Muhl. refers to another plant. Cuims somewhat 
clustered, erect or ascending, often somewhat purplish, 
smooth and glabrous. Sheaths, short, glabrous except 
the villous margin; ligule a mere margin. Basal leaves 
lanceolate or broader, glabrous; stem leaves spreading, 
lax, lanceolate, scarcely narrowed at the ciliate, cordate 
base, 23’—33’ long, 6’’—3’’ wide, glabrous on both sur- 
faces. Panicle variable, 1’—3’ long, ovate, the branches 
fascicled, at length spreading; spikelets elliptical or 
obovate, 14’ long, somewhat pubescent. 
Shady woods.—Very common.—Closely related to P. Joori and P. 
Manatense. Connecticut: Eames; Bridgeport, 1897. New 
York: Ashe; Ithaca, 1898. Missouri: Stewart Weller, 1894. 
Florida: Curtiss, 1894, No. 4636. 
6) Panicum Joori Vasey, Contrib. U. S. Nat. Herb. 
III, 1:31 (1891). Culms tufted, ascending or prostrate, 
much branched from the base upwards, 8’—19’ long. 
Sheaths loose, often as long as the internodes, glabrous 
except the ciliate margins; ligule a mere margin. 
Leaves very numerous, lanceolate or broader, taper-point- 
ed, narrowed to the cordate, sparingly ciliate base, other- 
wise glabrous, 7—9-nerved ; later leaves much smaller. 
Panicle small, 1’—2’ long, nearly sessile or partly includ- 
ed in the upper sheath, oblong ; spikelets very long pedi- 
celled, 14’’ long, elliptical, acute, glabrous. 
Closely related to P. commutatum, and P. Manatense. Missouri, 
