Part 2, 1912] POACEAE 185 
flat, of medium texture, glabrous, rough above, smooth beneath; racemes 2-4, erect, 5-7 cm. 
long, the rachis 1.5-2 mm. wide; spikelets in pairs, but little convex on one side, often so 
crowded as to appear as if in 4 rows, 3 mm. long and about 1.5 mm. wide, elliptic, the first 
scale wanting, the second and third scales 3-nerved, densely appressed-pubescent, the fruiting 
scale yellowish, slightly convex in cross-section. 
TYPE LOCALITY: Texas. 
DISTRIBUTION : Texas and Mexico. 
56. Paspalum tenellum Willd. Enum. Hort. Berol. 89. 1809. 
Paspalum Liebmanni Fourn. Mex. Pl. Gram. 11. 1881. 
Paspalum tenellum Bourgaei Fourn. Mex. Pl. Gram. 12. 1881. 
? Paspalum Virletii Fourn. Mex. Pl. Gram. 12. 1881. 
Stems up to 1 m. tall, glabrous, simple; leaf-sheaths papillose-hirsute; blades up to 2 dm. 
long, 1-2 cm. wide, lanceolate, flat, papillose-hirsute; racemes 5-10, rarely more, ascending or 
erect, 2-8 cm. long, the lower ones sometimes stalked, the rachis about 1 mm. wide; spikelets 
in pairs, 2 mm. long, I-1.2 mm. wide, elliptic to obovate, pubescent with spreading hairs, 
the first scale wanting, the second commonly 5-nerved, the third 3-nerved, the fruiting scale 
yellowish, smooth and shining. 
TYPE LOCALITY: Described from a plant from the Paris Garden. 
DISTRIBUTION : Southern Mexico. 
57. Paspalum pubiflorum Rupr.; (Galeotti, Bull. Acad. Brux. 9”: 
237, hyponym. 1842) Fourn. Mex. Pl. Gram. 11. 1881. 
Paspalum pubifiorum viride Fourn. Mex. Pl. Gram. 11. 1881. 
Paspalum Halli Vasey & Scribn. Bull. Torrey Club 13: 165, as synonym. 1886. 
Paspalum pubifiorum glaucum Scribn.; Vasey, Contr. U. S. Nat. Herb. 3:19. 1892. 
Paspalum paucispicatum Vasey, Contr. U. S. Nat. Herb. 1: 281. 1893. 
A stout glabrous perennial, usually rooting at the lower nodes, with flat leaf-blades and 
pubescent spikelets. Sterns 4-10 dm. long; leaf-sheaths more or less hirsute on the margin, 
the exterior basal ones hirsute all over; blades 3 dm. long or less and 1-1.5 cm. wide, glabrous 
on both surfaces; racemes 2-4, usually ascending, the lower ones 5-10 em. long; spikelets in 
pairs, 2.5-3 mm. long, about 2 mm. broad, broadly obovate, the first scale wanting, the 
second and third scales 3-nerved, the second scale strongly hirsute, the third glabrous, the 
fruiting scale yellowish-white. 
TYPE LOCALITY: Tehuacan de las Granadas, Puebla. 
DISTRIBUTION: Louisiana to Costa Rica. 
58. Paspalum geminum Nash, Bull. N. Y. Bot. Gard. 1:434. 1900. 
Paspalum remotum glabrum Vasey, Bull. Torrey Club 13: 166. 1886. 
Paspalum pubiflorum glabrum Vasey ; Scribn. Bull. Tenn. Exp. Sta. 7: 32. 1894, 
Paspalum laeviglume Scribn.; Nash, in Small, Fl. SE. U.S. 75. 1903. 
A stout glabrous tufted perennial, the stems later usually rooting at the lower nodes, with 
flat or folded leaf-blades and glabrous spikelets. Stems 5-15 dm. long; leaf-sheaths more or 
less hirsute on the margins, otherwise glabrous; blades 1-4 dm. long, 8-20 mm. wide, linear, 
glabrous on both surfaces, sometimes sparingly ciliate, flat or folded; racemes 3-8, spreading 
or ascending, the lower ones 4-10 cm. long; spikelets in pairs, 2.7-3 mm. long, 1.8-2 mm. broad, 
oval to broadly obovate, glabrous, the first scale wanting, the second 3—-5-nerved, the third 
5-7-nerved, the fruiting scale yellowish-white. 
TYPE LOCALITY : Eustis, Lake County, Florida. 
DISTRIBUTION : Maryland to Oklahoma, and south to Florida and Texas. 
ILLUSTRATION: Bull. Tenn. Exp. Sta. 7: /. 28. 
59. Paspalum portoricense Nash, Bull. Torrey Club 30: 377. 1903. 
A low tufted nearly glabrous slender perennial, Stems about 1 dm. tall, simple, glabrous, 
with the exception of a few hairs at the nodes; leaf-sheaths glabrous, usually shorter than the 
internodes and blades; blades 2-6 cm. long, 3-5 mm. wide, linear, acuminate, usually more 
