180 NORTH AMERICAN FLORA [VorumE 17 
34. Paspalum variabile (Fourn.) Nash. 
? Paspalum oaxacense Steud. Syn. Gram. 21. 1854. 
Dimorphostachys Schaffneri Fourn. Mex. Pl. Gram. 15. _ 1881. 
Dimorphostachys Schaffnert remottspicula Fourn. Mex. Pl. Gram. 15. 1881. 
Dimorphosiachys variabilis Fourn. Mex. Pl. Gram. 15. 1881. _- 
? Dimorphostachys Ghiesbreghiit Fourn. Mex. Pl. Gram. 16. 1881. 
? Dimorphostachys oajacensis Fourn. Mex. Pl. Gram. 16. 1881. 
Paspalum Schaffneri Scribn. in Millsp. Field Columb. Mus. Publ. Bot. 2: 24. 1900. Not P. Schaff- 
neri Griseb. 1881. 
Stems tufted, up to 1 m. tall, glabrous, with leafless flower-bearing branches from the 
uppermost axil; leaf-sheaths ciliate, otherwise glabrous; blades up to 2.5 dm. long, 1-2 cm. 
wide, lanceolate, ciliate, otherwise glabrous; racemes usually 2, rarely 1 or 3, on the main stem, 
commonly single on the branches ; spikelets in pairs, 3-3.2 mm. long and about 1.5 mm. wide, 
pubescent, the first scale of the lower spikelet of each pair 1-3-nerved, lanceolate, acuminate, 
sometimes nearly as long as the spikelet, that of the upper spikelet shorter, orbicular to ovate, 
obtuse or actite, 1-3-nerved, the second scale 5-nerved, as long as the spikelet, the third scale 
5-nerved, the fruiting scale oval, strongly roughened with longitudinal rows of papillae. 
TYPE LOCALITY: Mirador, Vera Cruz. : 
DISTRIBUTION: Central and southern Mexico. 
35. Paspalum pulchellum H.B.K. Nov. Gen. & Sp. 1:90. 1815. 
‘Reimaria elegans Fliigge, Gram. Monog. 216. 1810. Not Paspalum elegans Fliigge, 1810. 
A tufted perennial. Stems up to 7 dm. tall, glabrous, erect; leaf-sheaths glabrous or 
sparingly hirsute with ascending hairs; blades up to 1 dm. long, 1-2 mm. wide, papillose- 
hirsute with spreading hairs, the blades on the innovations and base of the stem elongate, 
those on the upper stem short or rudimentary; racemes in pairs, usually separated by a marked 
interval, rarely contiguous, 2-5 cm. long, the flexuous rachis about 0.5 mm. wide; spikelets 
‘singly arranged, 1.5-1.75 mm. long, 0.8-1 mm. wide, elliptic to oval, glabrous, the first and 
second scales wanting, the third scale brown, 3-nerved, the fruiting scale as long as the third 
‘scale, strongly convex, elliptic to oval, obtuse. 
TYPE LOCALITY: Cumana, Venezuela. 
DISTRIBUTION : Cuba; Hispaniola ; also in tropical South America. 
ILLUSTRATION : H.B.K. Nov. Gen. & Sp. fi. 26. 
36. Paspalum alterniflorum A. Rich. in Sagra, Hist. 
Cuba 11: 299. 1850. 
Paspalum dolichophylium Hack. Inf. An. Estac. Centr. Agron. Cuba 1: 409. 1906. 
Stems densely tufted, up to 1 m. tall, erect, glabrous, simple; leaves strongly striate; 
sheaths glabrous; blades up to 4 dm. long, 1.5-2 mm. wide when flat, usually involute, the 
‘lower surface glabrous, the upper surface pubescent with short hairs and near the base with a 
few long ones; racemes 2-4, erect, 6-10 cm. long, straight, about 1 mm. wide; spikelets 2.5-3 
mm. long and about 1 mm. wide, ovate to elliptic-ovate, the outer scales 3-nerved, the first scale 
wanting, the second pubescent with long hairs, as is also sometimes the third, the fruiting 
scale oval, much shorter than the other scales. 
TYPE LOCALITY : Cuba. _ 
DISTRIBUTION : Cuba and Haiti. 
37. Paspalum filiforme Sw. Prodr. 22. 1788. 
Paspalum Swarizianum Fligge, Gram. Monog. 96. 1810. 
Paspalum longifolium Steud. Syn. Gram. 21, 1854, 
Paspalum approximatum Doell, in Mart. Fl. Bras. 2?: 82. 1877. 
A tufted perennial. Stems erect, up to 8 dm. tall, simple; leaves strongly striate; sheaths 
glabrous, gradually passing into the blade; blades involute, up to 3 dm. long or more, glabrous, 
or often hirsute on the upper surface near its junction with the sheath; raceme single, or rarely 
2, usually curved, up to 1 dm. long, the rachis less than 1 mm. wide; spikelets singly disposed, 
2-2.5mm. long, 1.2-1.6 mm. wide, on hispidulous pedicels, glabrous, the first scale wanting, the 
