Par? 2, 1912] POACEAE 183 
TYPE LOCALITY: Georgia. 
DISTRIBUTION : Maryland to Kansas, and south to Florida and Texas. 
ILLUSTRATIONS: Vasey, Agr. Grasses U. S. pl. 1; Bull. U. S. Dep. Agr. Agrost.7: f. 27; 20: f. 
wee Tenn. Exp. Sta. 7: f. 21; Britt. & Brown, Ill. Fl. f 234; Mem. Accad. Sci. Bologna 2: 
47. Paspalum longipilum Nash, Bull. N. Y. Bot. 
Gard. 1: 435. 1900. 
_ A somewhat tufted perennial with flat leaf-blades and glabrous spikelets, the leaf-sheaths 
hirsute with long hairs. Stems 6-8 dm. tall, simple; leaf-sheaths much compressed, keeled, 
at least the lower ones densely papillose-hirsute with long spreading hairs; blades 2 dm. long 
or less, less than 1 cm. wide, linear, often folded, erect, rather firm, strongly pubescent on the 
upper surface with long spreading hairs, nearly glabrous beneath; racemes 2 or 3, ascending, 
5-7 cm. long, the rachis flat, somewhat flexuous, about 1 mm. wide; spikelets singly disposed, 
oval, 2.5-3 mm. long and 2-2.5 mm. wide, the first scale wanting, the second and third scales 
5-nerved, the lateral nerves approximate, the fruiting scale yellowish-white. 
TYPE LOCALITY: Eustis, Lake County, Florida. 
DISTRIBUTION: Florida. 
48. Paspalum plenipilum Nash, in Britton, Man. 73. 1901. 
Paspalum laeve pilosum Scribn. Bull. Tenn. Exp. Sta. 7: 34. 1894. Not P. pilosum Lam. 1791. 
Paspalum praelongum Nash, in Small, Fl. SE. U. S. 74, 1903. . 
A tufted pubescent perennial with flat leaf-blades and glabrous spikelets. Stems 5-10 
dm. tall, simple; Jeaf-sheaths compressed, tuberculate-hirsute with long spreading hairs: 
blades 3 dm. long or less, 6-10 mm. wide, erect, flat, hirsute on both surfaces with long spreading 
hairs; racemes 2-4, spreading or ascending, 4-8 cm. long, the rachis about 1 mm. wide; spike- 
lets singly disposed, oval, about 2.5 mm. long and 2 mm. broad, the first scale wanting, the 
second and third scales 5-nerved, the lateral nerves near the margin, approximate, the fruiting 
scale one half as thick as broad or nearly so. 
TYPE LOCALITY: (Clifton, Passaic County,] New Jersey. : 
DISTRIBUTION: New Jersey to Missouri, and south to Florida and Mississippi. 
49. Paspalum circulare Nash, in Britton, Man. 73. 1901. 
A tufted perennial with flat leaf-blades and orbicular glabrous spikelets. Stems 5-10 
dm. tall, simple; leaf-sheaths compressed, tuberculate-hirsute with spreading or ascending 
hairs; blades 3 dm. long or less, 5-8 mm. wide, erect, flat, more or less hirsute on both surfaces; 
racemes 2-4, erect or ascending, 6-10 cm. long, the rachis about 1 mm. wide; spikelets singly 
disposed, orbicular, about 3 mm. in diameter, the first scale wanting, the second and third 
scales thin and usually wrinkled when dry, 5-nerved, the lateral nerves near the margin and 
approximate but quite distinct, the fruiting scale with its thickness one fourth to one third of 
the diameter. 
TYPE LOCALITY : Bergen County, New Jersey. _ 
DISTRIBUTION: New York to Delaware, Missouri, and Texas. 
50. Paspalum praecox Walt. Fl. Car. 75. 1788. 
Paspalum lentiferum Lam. Tab. Encyc. 1: 175. 1791. 
Paspalum virgatum Le Conte, Jour. de Phys. 91 : 284. 1820. 
A usually slender glabrous perennial, with flat often short leaf-blades, and glabrous. 
flat spikelets. Stems compressed, 6-12 dm. tall; leaf-sheaths compressed, glabrous; blades 
2 dm. long or less, 4-6 mm. wide, linear, erect, flat, glabrous; racemes usually 4-6, rarely 
more or fewer, ascending, 2-5 cm. long; spikelets in pairs, nearly flat on both sides, yellow- 
ish-green, orbicular to oval, 2.2-2.5 mm. long, 1.8-2.2 mm. wide, the first scale wanting, 
the second and third scales 3-nerved, the fruiting scale flat, striately roughened with con- 
spicuous papillae. 
TYPE LOCALITY: South Carolina. 
DISTRIBUTION : North Carolina to Florida and Texas. 
ILLUSTRATION: Trin. Ic. PJ. 137. 
