240 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
37. Paspalum jaliscanum Chase, sp. nov. 
Culms simple, slender, 1 meter or more high, solitary, ascending or erect from a 
stout rootstock bearing densely harsh-pubescent scales; nodes appressed-hirsute or the 
upper nearly glabrous; sheaths sparsely papillose-hirsute along the margin and toward 
the summit; ligule membranaceous, brown, 3 mm. long, a ring of long white hairs at 
the base of the blade surrounding it; blades flat, 12 to 20 cm. long, 12 to 15 mm. wide 
(the elongated upper sheath bladeless or nearly so), tapering to the base, or those of 
the mid-culm rounded at base, dull green above, glossy beneath, pilose at the base 
on the upper surface, the margin inconspicuously stiffly ciliate; panicle long- 
exserted, brownish purple, 8 to 10 cm. long, the main axis slender but stiff; racemes 
5 to 12, ascending or spreading, the lower (sometimes branching) 4 to 5 cm. long, the 
others gradually shorter, more or less crowded, the rachis slender (about 0.6 mm. wide) 
a tuft of stiff white hairs in the axil, the axis and rachises otherwise glabrous; spikelets 
in pairs on glabrous pedicels, 2.2 mm. long, 1.3 mm. wide, elliptical, subacute, strongly 
convex on the back, slightly concave on the face, the second glume scarcely equaling 
the fruit, 3-nerved, glandular-pubescent, the sterile lemma equaling the fruit, 3- 
nerved, glabrous; fruit elliptic, stramineous, smooth and shining. 
Type in the U. 8. National Herbarium, no. 691236, collected in the lower forest 
region, at about 2,300 meters altitude, Zapotlén to Nevado de Colima, Jalisco, 
Mexico, September 23, 1910, by A. 8. Hitchcock (no. 7153). ‘ 
RanGeE: Known only from Jalisco, a second collection made in pine woods, hillside, 
Zapotlan, Hitchcock 7240. A specimen lacking the base, with larger panicle and 
pubescent sterile lemma (Liebmann 199, Chinantla, Puebla) may belong to this 
species. 
38. Paspalum unispicatum (Scribn. & Merr.) Nash, N. Amer. Fl. 17: 193. 1912. 
Panicum unispicatum Scribn. & Merr. U. 8. Dept. Agr. Div. Agrost. Bull. 24: 14, 
1901. 
Type locality, ‘‘ Valley of Oaxaca,’’ the type specimen collected by Pringle (no. 
6717). 
Rance: Highlands, Nuevo Leén to Oaxaca. 
HERBARIUM SPECIMENS: 
Nuevo Leon: Monterey, edge of field, Hitchcock 5561. 
Puesia: Acatzinco, Nicolas in 1909. 
Oaxaca: Oaxaca, along hedge in town, Hitchcock 6098, 6099; Valley of Oaxaca, 
Pringle 6717. 
89. Paspalum erianthum Nees in Trin. Gram. Pan. 121. 1826. 
Type locality, ‘‘Brasil.”’ 
Rance: Southern Mexico to South America. 
HERBARIUM SPECIMEN FROM MEXICco. 
Oaxaca: Vicinity of San Juan Guichicovi, Nelson 2735. 
40. Paspalum malacophyllum Trin. Gram. Icon. 3: pl. 271. 1836. 
Type locality, Brazil, the type specimen collected by Langsdorf at ‘‘Cuyaba, 
Chapada” according to the data on the specimen in the Trinius Herbarium. 
Rance: Yucatdn to Paraguay. 
HERBARIUM SPECIMEN FROM MEXICO: 
Yucatdn: Mérida, Schott 593. 
