194 NORTH AMERICAN FLORA [VoLUME 17 
otherwise glabrous, or rarely sparingly hirsute on the surface; racemes 2-6, erect or ascending, 
2.5~7 cm. long, the rachis 1-1.5 mm. wide; spikelets normally in pairs, sometimes single, 
orbicular or nearly so, 2.5-3.5 mm. long, the first scale wanting, the second and third scales 
papillose, 3-nerved, the second scale with a broad wing, cut, cleft or parted into divisions 
which are ciliate with stout hairs, the third scale with a similar wing which is usually incomplete, 
or sometimes wingless, the fruiting scale roughened with papillae, 7-ridged. 
TYPE LOCALITY: Ibagué, Colombia. 
DISTRIBUTION : West Indies; Costa Rica; also in tropical South America. 
ILLUSTRATION: H.B.K. Nov. Gen. & Sp. pl. 28. 
91. Paspalum orbiculatum Poir. in Lam. Encyc. 5: 32. 1804. 
Paspalum pusillum Vent.; Fiiigge, Gram. Monog. 100. 1810. 
? Paspalum rhizomatosum Steud. Syn. Gram. 17. 1854. 
Paspalum geniculatum Steud. Syn, Gram. 18. 1854. 
Paspalum Lenormandi Husnot, Bull. Soc. Linn. Norm. IJ. 5: 259. 1870. 
Stems extensively creeping and branching, the branches up to 3 dm. long; leaf-sheaths cili- 
ate, otherwise glabrous; blades up to 6 cm. long, 4-8 mm. wide, lanceolate to linear-lanceolate, 
flat, glabrous; racemes 3-8, rarely 2, ascending, 1-2 cm. long, the rachis about 0.5 mm. wide; 
spikelets singly disposed, about 1 mm. long and 0.6 mm. wide, oval, glabrous, the first scale 
wanting, the second and third scales 2-nerved by the suppression of the midnerve, rarely 3- 
nerved, the fruiting scale brown at maturity. 
TYPE LOCALITY: Porto Rico. 
DISTRIBUTION: Porto Rico to Barbados; Guatemala to Panama; also in tropical South 
America. 
ILLUSTRATIONS: Kunth, Rév. Gram. p/. 208; Trin. Ic. pl. 273. 
92. Paspalum conjugatum Berg. Acta Helv. 7: 129. 1772. 
Paspalum tenue Gaertn. Fruct. 2:2. 1791. 
Paspalum ciliatum Lam. Tab. Encye.1:175. 1791. 
Paspalum Renggeri Steud. Syn. Gram. 17. 1854. 
Paspalum Sieberianum Steud. Syn. Gram. 17. 1854. 
Paspalum longissimum Hochst.; Steud. Syn. Gram. 19. 1854. 
A glabrous plant with compressed stems which are finally decumbent at the base and 
rooted at the lower nodes, flat leaf-blades, slender racemes, and ciliate spikelets. Stems 2-9 
dm. long; leaf-sheaths compressed, glabrous; blades 4-16 cm. long, 4-12 mm. wide; racemes 
in pairs, arising from the apex of the stem, slender, often curved, spreading or ascending, 5-12 
em. long, the rachis straight or flexuous toward the apex, 0.6—0.8 mm. wide; spikelets crowded, 
1.5 mm. long and 1-1.2 mm. wide, apiculate, the first scale wanting, the second and third scales 
2-nerved, the nerves marginal, the second scale ciliate on the margins with long lax hairs, the 
fruiting scale smooth and white. 
TYPE LOCALITY : Surinam. 
DISTRIBUTION : Florida to Mexico, and south to Panama; Bermuda; West Indies ; and through- 
out tropical regions. 
ILLUSTRATIONS: Gaertn. Fruct. f/. 80; Beauv. Fl. Oware £1. 92,f.2,; Trin..Ic. pl. 102; Acta 
Helv. 7: p7. 8. 
93. Paspalum multicaule Poir. in Lam. Encyc. 
Suppl. 4: 309. 1816. 
Paspalum papitlosum Spreng. Nov. Prov. Hal. 47. 1819. 
Paspalum Pittieri Hack. Oesterr. Bot. Zeits. 51: 233. 1901. 
Stems tufted, up to 4 dm. tall, glabrous, branched below; leaf-sheaths hirsute; blades up to 
1 dm. long, 2-3 mm. wide, hirsute, erect; racemes in conjugate pairs, spreading or ascending, 
1.5-5 cm. long, the flexuous rachis about 0.5 mm. wide; spikelets singly disposed, 1-1.3 mm. 
long, 0.8-1.1 mm. wide, orbicular or nearly so, the first scale wanting, the second and third scales 
3-nerved, or the second 2-nerved by the suppression of the midnerve, one or both usually 
papillose, the fruiting scale yellowish. 
TYPE LOCALITY: Brazil. 
DISTRIBUTION : Cuba; Costa Rica; also in Brazil. 
