Parr 2, 1912] POACEAE 161 
Stems at first erect, finally prostrate and rooting at the lower nodes, 4-8 dm. long; leaf- 
sheaths papillose-pubescent; blades up to 12 cm. long and 1.5 cm. wide, lanceolate, glabrous; 
racemes 2-5, distant, 3-8 cm. long; spikelets about 4 mm. long, glabrous, the first scale orbicu- 
lar or nearly so, one third to two fifths as long as the spikelet, obtuse to acutish, 5—7-nerved, 
white, the second and third scales equal, the second 7-nerved, the third 5-nerved, the fruiting 
scale oval, transversely rugose, obtuse. 
TYPE LOCALITY: Not indicated. 
- DISTRIBUTION: Louisiana to Mexico, south to Costa Rica; Cuba; also in northern South 
merica, 
ILLUSTRATIONS: Bull. U.S. Dep. Agr. Agrost.17: f 340; Trin. Ic. pl. 235, 
2. Brachiaria Meziana Hitche. Contr. U. S. Nat. 
Herb. 12: 140. 1908. 
Stems tufted, often decumbent at the base, up to 7 dm. long, often rooting at the lower 
nodes; leaf-sheaths compressed, glabrous or pubescent; blades 3-10 cm. long, 6-10 mm. wide, 
glabrous or pubescent, ciliate on the margin; racemes 4-8, 2-5 cm. long, spreading or ascending, 
the rachis setiferous; spikelets, on setiferous pedicels, 2.5-3 mm. long, oval, glabrous, the first 
scale ovate to nearly orbicular, 3-nerved, acute, the second and third scales 5-nerved, the 
former a little shorter than the latter, the fruiting scale transversely rugose, apiculate. 
TYPE LOCALITY: Cerro de Guadalupe, Federal District, Mexico, altitude 2770 m. 
DISTRIBUTION: Northern and central Mexico. 
51. ANASTROPHUS Schlecht. Bot. Zeit. 8: 681. 1850. 
Perennial tufted grasses, often with long creeping stolons which are thickly clothed with 
leaves having short blades, and with 1-sided racemes in pairs, digitate, or in panicles, the 
rachis often winged. Spikelets articulated to the pedicel below the scales, 1-flowered, elliptic 
to lanceolate, obtuse or acute, glabrous or pubescent, singly and alternately disposed in 2 
rows, the back of the fruiting scale turned away from the rachis. Scales 3 (first scale wanting) ; 
second and third scales membranous; fourth or fruiting scale indurated, obtuse, its margins 
inrolled, enclosing a palet of similar texture and a perfect flower. Stamens 3. Styles distinct. 
Stigmas plumose. 
Type species, Paspalum platyculmum Thouars. 
Stems arising from long creeping rootstocks; plants sending out long root- 
ing stolons. 
Spikelets 1-1.25 mm. long. 1. A. capillaris. 
Spikelets 2mm. long or more. 
Racemes 2 or 3. 
Spikelets 2-3 mm. long. 2. A. compressus, 
Spikelets 4-6 mm. long. 
Spikelets glabrous; racemes in pairs at the summit of the stem, or 
sometimes with an additional one below. 3. A. furcatus. 
Spikelets pubescent ; racemes 2, distant. 4. A. obtusifolius. 
Racemes numerous, racemosely arranged. 5. A. deludens. 
Stems tufted; plants without long rooting stolons. 
Outer scales but little exceeding the fruiting scale ; spikelets obtuse or acut- 
ish, 3 mm. long or less. 
Spikelets 2.5mm. long, strongly pubescent. 6. A. laxifiorus. 
Spikelets 3 mm. long, sparingly pubescent at the base and on the margins ; 
only. 7. A. potophyllus. 
Outer scales much exceeding the fruiting scale ; spikelets acute, 4mm. long. 8, 4. Rosei. 
1. Anastrophus capillaris (Lam.) Nash. 
Paspalum capillare lam. Tab. Encye.1:176. 1791. 
Paspalum minutum Trin. Linnaea 10: 293. 1836. 
Axonopus capillaris Chase, Proc. Biol. Soc. Wash. 24: 133. 1911. 
Stems up to 4 dm. tall, very slender, with one or more leafless branches arising from the 
upper axils; leaf-sheaths ciliate on the margin, otherwise glabrous; blades glabrous, 3-6 cm. 
long, 4-6 mm. wide, flat, lanceolate, acuminate; racemes in pairs at the summit of the stem 
and branches, or sometimes with an additional one or more below, slender, often curved, 2-3 
em. long, the rachis narrowly winged; spikelets 1-1.25 mm. long, appressed-pubescent, the 
outer scales about as long as the glabrous fruiting scale. 
TYPE LOCALITY : South America. 
DISTRIBUTION : Costa Rica ; also in Peru and Brazil. 
ILLUSTRATIONS: Trin. Ic. pl. 100 ; Kunth, Rév. Gram. P/. 71. 
