GRASS FAMILY. 107 
4. Paspalum dilatatum Poir. ‘Tall Paspalum (Fig. 230.) 
Paspalum dilatatum Poir. in am. Encyel. 5:35. 1804. 
Paspalum ovatum Nees, Agrost. Bras. 43. 1829. 
Culms erect, 3°-6° tall, smooth and glabrous. 
Sheaths compressed, smooth and glabrous; leaves 1° 
or more long, 2/’-5’’ wide, long-acuminate, rather 
scabrous on the margins, sometimes with a tuft of 
hairs at the base; spikes 4-12, 2’-5’ long, spreading, 
alternate, 3/’-2’ distant on the main axis; rachis of 
the spikes narrow, less than 1’’ wide, somewhat flexu- 
ous, scabrous; spikelets about 114’’ long, in 3 or 4 
rows, acute; outer scales 5-nerved, the first villous on 
the margins, the second glabrous or sparsely pubescent, 
the third nearly orbicular, minutely punctate-striate. 
In moist soil, Virginia to Florida, west to Texas. 
Ascends to 1000 ft. in Georgia. Aug.—Sept. 
5. Paspalum setaceum Michx. Slender Paspalum. (Fig. 231.) 
Paspalum setaceum Michx. F1. Bor. Am. 1: 43. 1803. 
Paspalum pubescens Muhl. Gram. 92. 1817. 
Culms mostly erect, 1°-2° tall, slender, smooth. 
Sheaths and leaves generally very pubescent, the 
latter 3/8’ long, 1//-3/’ wide, erect, acuminate; spikes 
114’-34’ long, more or less curved, generally solitary, 
occasionally 2, on a long-exserted slender peduncle, 
with usually r or 2 additional shorter peduncles from 
the same upper sheath ; spikelets about 3/’/ long, in 2 
narrow rows, broadly obovate, very obtuse; empty 
scales 3-nerved, glabrous or pubescent; third scale ob- 
ovate, shining. 
In dry fields, Massachusetts to Illinois, south to Florida 
and Texas. Ascends to 2200 ft. in Virginia. Aug.—Sept. 
6. Paspalum ciliatifolium Michx. Ciliate-leaved Paspalum. (Fig. 232.) 
Paspalum ciliatifolium Michx. F1. Bor. Aim. 1: 44. 
1803. 
Paspalum dasyphyllum Ell. Bot. S. C. & Ga. 1: 105. 
1817. 
Culms erect, 144°-2'4° tall, smooth. Sheaths 
varying from glabrous to pubescent; leaves 4’—9’ 
long, 3-7’ wide acuminate, pubescent or glabrous, 
ciliate, the upper one usually broad and cordate at 
base; spikes 1 or 2, occasionally 3, 2/-4’ long; 
peduncles 1-3, exserted from the upper sheath ; 
rachis very narrow, slightly flexuous and triangu- 
lar, scabrous; spikelets 1/’-114/’ long, in 2-4 rows, 
crowded, oval, the first or convex scale sometimes 
sparingly pubescent, the third scale with a distinct 
depression on the back near the base. 
In dry soil, New Jersey and Pennsylvania to Kansas, 
south to Florida and Texas. June-Aug. 
