Part 2, 1912] POACEAE 179 
yellowish, the first scale small, present or wanting in the lower spikelet of each pair and wanting 
in the upper spikelet, the second and third scales yellowish, the nerves green and very promi- 
nent, the second scale 5-nerved, the third 3-nerved, the fruiting scale yellowish, oval, strongly 
roughened with longitudinal rows of papillae. 
TYPE LOCALITY: Mountains of Culiacan, Sinaloa. 
DISTRIBUTION : Known only from the type locality. 
31. Paspalum macrophyllum H.B.K. Nov. Gen. & Sp. 1: 92. 1815. 
Paspalum planifolium Fourn. Mex. Pl. Gram. 10. 1881. 
Paspalum macrophylium piliferum Fourn. Mex. Pl. Gram. 11. 1881. 
Dimorphostachys Botterit Fourn. Mex. Pl. Gram. 14. 1881. 
Dimorphostachys paspaloides Fourn. Mex. Pl. Gram. 14. 1881. 
Paspalum seltaceum pubiflorum Vasey, Contr. U. S. Nat. Herb. 1: 114. 1891. 
Stems tufted, up to 1.5 m. tall, glabrous, with usually leafless flower-bearing branches in 
the uppermost axil; leaf-sheaths often ciliate, the lower ones commonly papillose-hispid, the 
upper ones glabrous; blades up to 3 dm. long or more, the larger 1.5-2.5 cm. wide, rough on the 
margins and often ciliate, flat, sometimes papillose-hispid on the surfaces; racemes 5-15, 
rarely fewer, spreading or ascending, up to 1 dm. long, the rachis 1 mm. wide; spikelets 2-2.7 
mm. long, 1.4 mm. wide, in pairs, elliptic to obovate, the first scale wanting, or sometimes 
present in the lower spikelet, the second 5-nerved, appressed-pubescent, equaling or a little 
shorter than the spikelet, often surrounding the base of the spikelet, the third scale 3-5-nerved, 
glabrous or appressed-pubescent, the fruiting scale yellowish, roughened with papillae. 
TYPE LOCALITY: Near Ibagué, Colombia. 
‘DISTRIBUTION: Central and southern Mexico; also in Colombia. 
32. Paspalum Langei (Fourn.) Nash. 
Dimorphosiachys Langei Fourn. Mex. Pl. Gram. 14. 1881. 
es Drummondii Fourn. Mex. Pl. Gram. 15. 1881. Not P. Drummond C. Mill. 
1861. 2 
Paspalum Drummondii Vasey, Contr. U. S. Nat. Herb. 3: 18. 1892. 
Paspalum oricola Millsp. & Chase, Field Columb. Mus. Publ. Bot. 3: 28. 1903. 
A nearly glabrous branched perennial, with flat leaf-blades and pubescent spikelets. 
Stems 3-7 dm. tall, glabrous; leaf-sheaths glabrous, excepting the ciliate margin; blades up 
to 2 dm. long, 8-15 mm. wide, erect, glabrous, sometimes ciliate, or with a few scattered hairs 
on the upper surface; racemes 2-4, rarely more, 4—9 cm. long, the rachis about 0.5 mm. wide; 
spikelets in pairs, 2-2.3 mm. long and about 1.5 mm. wide, obovate or elliptic, the first scale 
small, nerveless, rarely wanting in the upper spikelet, the second rather strongly pubescent, 
the third 5-nerved, glabrous, the fruiting scale roughened with longitudinal rows of papillae. 
TYPE LOCALITY: Hacienda de Jovo, Vera Cruz. 
DISTRIBUTION: Louisiana to Mexico and Guatemala. 
ILLUSTRATION: Field Columb. Mus. Publ. Bot. 3: £/. opp. 28. 
33. Paspalum ciliiferum (Nash) Hitchc. Contr. U. S. Nat. 
Herb. 12: 201. 1909. 
Dimorphostachys ciliifera Nash, in Small, Fl. SE. U. S. 78. 1903. 
A tall branched perennial, with pubescent ciliate flat leaf-blades, and pubescent spikelets. 
Stems glabrous, or sometimes papillose-hirsute toward the apex, 7-11 dm. tall; leaf-sheaths 
ciliate, otherwise glabrous, or the lower ones papillose-hirsute; blades up to 3 dm. long and 1.5 
cm. wide, erect or nearly so, ciliate, pubescent on the surfaces with scattered hairs; racemes 
2 or 3, finally spreading, 7-9 cm. long, the rachis about 1 mm. wide; spikelets crowded in 
pairs, 2.5-2.8 mm. long and about 1.8 mm. broad, the first scale glabrous, very small or some- 
times one half as long as the spikelet and acuminate, nerveless, or in the larger ones I-nerved, 
the second and third scales 5-nerved, the second glabrous, the third pubescent with short 
appressed hairs, the fruiting scale roughened with longitudinal rows of papillae. 
TYPE LOCALITY: Manatee, Florida. 
DISTRIBUTION: Florida and Cuba. 
