158 NORTH AMERICAN FLORA [VoLumME 17 
2. Eriochloa subglabra (Nash) Hitchc. Contr. U. S. Nat. 
Herb. 12: 208. 1909. 
Monachne subglabra Nash, Bull. Torrey Club 30: 374. 1903. 
Eriochloa punctata subglabra Urb. Symb. Ant. 4: 85. 1903. 
Stems 8-12 dm. tall, glabrous, except the densely pubescent nodes; leaf-sheaths ciliate 
on the margins, the lower ones papillose-hirsute between the nerves; blades flat, ascending, or 
the longer ones drooping, glabrous, 1-3 dm. long, 7-17 mm. wide; inflorescence about 1 dm. 
long, the axis hispidulous on the angles; racemes ascending, 4-6 cm. long, the rachis hispidulous 
on the margins and more or less setiferous, the short pedicels usually with a few long hairs; 
spikelets about 3.5 mm. long and 1.3 mm. wide, elliptic to ovate-lanceolate, acute, a short semi- 
circular first scale usually present, the second and third scales about equal, acute, rather 
sparingly appressed-pubescent, the third scale bearing a staminate flower, the fruiting scale 
about as long as the spikelet, elliptic, papillose-roughened, mucronate. 
TYPE LOCALITY: Martin Pefia, Porto Rico. 
DISTRIBUTION : Porto Rico. 
3. Eriochloa acuminata (J. Presl) Kunth, Enum. 1: 72. 1833. 
Piptatherum acuminatum J. Presl, in Presl, Rel. Haenk.1: 221. 1830. 
Eriochloa punctata minor Vasey, Contr. U.S. Nat. Herb. 3: 21. 1892. 
Annual. Stems up to 8 dm. tall, sometimes branched, glabrous, or pubescent above; 
leaf-sheaths glabrous; blades up to 2 dm. long and 1 cm. wide, glabrous; inflorescence usually 
of numerous racemes, 8-15 cm. long, the axis pubescent with short spreading hairs and longer 
ascending ones; racemes erect or nearly so, 2-4 cm. long, the rachis triangular, pubescent 
with short spreading hairs and longer ascending ones; spikelets often in pairs, at least at the 
base of the racemes, 4-6 mm. long, about 1.5 mm. wide, ovate-elliptic, the first scale wanting, 
the second and third scales appressed-hirsute below, acute or cuspidate, or the second rarely 
bearing a short awn, the fruiting scale elliptic, obtuse, about three fourths as long as the body 
of the first scale, obtuse, mucronate, dull or faintly shining, papillose-roughened. 
TYPE LOCALITY: Mexico. 
DISTRIBUTION: Texas to Arizona and northern Mexico. 
4. Eriochloa aristata Vasey, Bull. Torrey Club 13: 229. 1886. 
Annual. Stems up to 1 m. tall, glabrous, except at the pubescent apex; leaf-sheaths 
glabrous; blades glabrous, up to 4 dm. long and 18 mm. wide; inflorescence 8-20 cm. long, 
‘of numerous racemes, its axis, as well as the rachis of the racemes, pubescent with long and 
short hairs; racemes 2-4 cm. long; spikelets often in pairs at the base of the racemes, 5.5-6.5 
mm. long, excluding the awns, the first scale wanting, the second and third scales appressed- 
hirsute below, acuminate, the second with an awn sometimes nearly as long as the body of 
the scale, the third scale awn-pointed, the fruiting scale one half to two thirds as long as the 
body of the first scale, elliptic, papillose-roughened, not shining, puberulent at the obtuse 
apex, with a short hispidulous cusp 0.25 mm. long or less. 
TYPE LocaLiTry . Southwestern Chihuahua. 
DISTRIBUTION: Arizona and Chihuahua. 
5. Eriochloa Michauxii (R. & S.) Hitchc. Contr. U. S. Nat. 
Herb. 12: 147. 1908. 
Panicum molle Michx. Fl. Bor. Am. 1: 47. 1803. Not P. molle Sw. 1788. 
? Monachne unilateraiis Beauv. Agrost. 49. 1812. 
Panicum Michauxii R. & S. Syst. Veg. 2: 427. 1817. 
Panicum georgicum Spreng. Syst. 1: 308. 1825. 
Eriochloa mollis Kunth, Rév. Gram. 30. 1829. 
Eriochloa mollis longifolia Vasey, Bull. Torrey Club 13: 25. 1886. 
Eriochloa longifolia Vasey, Contr. U. S. Nat. Herb. 3: 21. 1892. 
Perennial. Stems up to 1 m. tall or more, glabrous, except at the pwuberulent nodes 
and just below the inflorescence; leaves glabrous, except the puberulent apex of the sheath; 
blades up to 4.5 dm. long and 1 cm. wide; inflorescence 1-2 dm. long, the axis puberulent or 
almost glabrous to densely pubescent with spreading hairs; racemes ascending, 2.5—5 cm. long, 
