320 
OHIO BIOLOGICAL SURVEY 
2. Echinochloa waited (Pursh.) Nash. Marsh Cockspur-grass. 
A grass with robust more or less succulent stems, 3-6 ft. long, and 
a long more or less drooping panicle with compact ascending or 
spreading branches. Spikelets long-awned, ovate-lanceolate, on one 
side of the rachis, brownish-purple; inner empty glume and empty 
lemma awned; fertile lemma, ovate-lanceolate, acuminate. 
In marshes and ditches. Aug.-Oct. Erie, Lorain, Shelby, Au¬ 
glaize, Licking. 
57. Paspalum L. Paspalum. 
Perennial grasses of various habit with the spikelets in spike¬ 
like, one-sided racemes, digitate or racemose at the tip of the main 
stem or branches. Spikelets with 1 perfect flower and a vestige, 
plano-convex, nearly sessile, placed with the back of the fertile 
lemma toward the rachis; empty glumes very unequal or the outer 
entirely obsolete; lemma and palet indurated, margins of the lemma 
inrolled; grain free, enclosed in the flowering glumes. 
1. Rachis of the racemes very broad, membranous with inrolled margins, about 
twice the width of the spikelets; rachis not extending beyond the spikelets. 
P. dissectum. 
1. Rachis narrower than the spikelets not inrolled on the margins. 2 
2. Stems simple, axillary peduncles none; racemes stout; sheaths glabrous or 
nearly so. P. laeve. 
2. Stems branched, the upper sheaths containing from 1-3 branches; racemes 
slender. 3 
3. Spikelets somewhat pubescent, in. long. P. setaceum. 
3. Spikelets glabrous, nearly % in. long. P. muhlenbergii. 
1. Paspalum setaceum Mx. Slender Paspalum. A slender grass 
with erect or ascending stems, ^-2^4 ft. high, and with an inflor¬ 
escence of 1-2 spike-like racemes. Spikelets ovate, somewhat pube¬ 
scent, about 1/16 in. long; one of the empty glumes 3-nerved, the 
other 2-nerved. 
In dry fields. Aug.-Oct. Cuyahoga County. 
2. Paspalum muhlenbergii Nash. Muhlenberg’s Paspalum. A 
tufted branching pubescent perennial grass with spreading or re¬ 
clining stems, 1-2^ ft. long, and an inflorescence of 1-2 spike-like 
racemes. Spikelets glabrous, oval or broadly obovate, in pairs; 
lemma with inrolled margins; empty glumes usually 3-nerved. 
In fields and sandy soil. Aug.-Oct. Cuyahoga, Erie, Warren, 
Hamilton, Scioto, Guernsey. 
58. Chaetdchloa Scrib. Foxtail-grass, 
Annual or perennial grasses usually with erect stems and flat 
leaf blades, the inflorescence in spike-like panicles containing nu¬ 
merous persistent awn-like bristles on the rachis below the articu- 
