GRASS FAMILY. 179 
2. Gymnopogon brevifolius Trin. 
Short-leaved Gymnopogon. 
(Fig. 409. ) 
Gymnopogon brevifolius Trin. Unifl. 238. 1824. 
Culms 1°-2° long, from a decumbent base, simple, 
slender, smooth and glabrous. Sheaths shorter 
than the internodes, sometimes crowded near the 
middle of the culm; ligule very short; leaves 1/—2/ 
long, 1’’-4’’ wide, usually spreading, lanceolate, 
acute, cordate at the base; spikes very slender, 
spikelet-bearing above the middle, the lower 4/— 
6’ long, at first erect, finally widely spreading; 
spikelets, exclusive of the awns, 114’ long; first 
scale shorter than the second; third scale equalling 
or exceeded by the second, short-awned, sparingly 
villous or glabrous, the callus hairy. 
In dry soil, New Jersey to Florida, west to Missis- 
sippi. Aug.-Oct. 
Hee SCHEDONNARDUS Steud. Syn. Pl. Gram. 146. 1855. 
An annual grass with branching culms, narrow leaves and slender spikes arranged along 
acommon axis. Spikelets 1-flowered, sessile and alternate on the rachis. Scales 3; the 2 
lower empty, narrow, membranous, acuminate; the flowering scale longer, of similar texture; 
palet narrow, shorter. Stamens 3. Styles distinct. Stigmas plumose. Grain linear, free, 
enclosed in the rigid scale. [Greek, in allusion to the resemblance of this grass to the 
genus Nardus. | 
A monotypic genus of central North America. 
1. Schedonnardus paniculatus (Nutt. ) 
Trelease. Schedonnardus. (Fig. 410.) 
Lepturus paniculatus Nutt. Gen. 1: 81. 1818. 
Seeeaorn arms Texanus Steud. Syn. Pl. Gram. 146. 
Spelman: paniculatus Trelease, Branner & Co- 
ville, Rep. Geol. Surv. Ark. 1888: Part 4, 236. 1891. 
Culms 8/-18/ tall, erect, slender, rigid, branch- 
ing at the base, scabrous. Sheaths crowded at the 
base of the culm, compressed, smooth and gla- 
brous; ligule 1’’ long, truncate; leaves 1/-2’ long, 
1’ wide or less, flat, usually erect; spikes numer- 
ous, rigid, widely spreading, alternate, the lower 
2/-4/ long, the axis and branches triangular; spike- 
lets 1144’/-114’’ long, sessile and appressed, alter- 
nate; scales hispid on the keel, the second longer 
than the first and exceeded by the acute third one. 
Manitoba and Assiniboia, south to Illinois, Texas 
and New Mexico. July-Sept. 
Gee BOUTELOUA Lag. Var. Cienc. y Litter. 2: Part 4, 134. 1805. 
Annual or perennial grasses with flat or convolute leaves and numerous spikelets in one- 
sided spikes. Spikelets 1-2-flowered, arranged in two rows on one side of a flat rachis, the 
rachilla extended beyond the base of the flowers, bearing 1-3 awns and 1-3 rudimentary scales. 
Two lower scales empty, acute, keeled; flowering scale broader, 3-toothed, the teeth awn- 
pointed or awned; palet hyaline, entire or 2-toothed. Stamens 3, Stylesdistinct. Stigmas 
plumose. Grain oblong, free. [In honor of Claudius Boutelou, a Spanish botanist. | 
About 3o species, particularly numerous in Mexico and in the southwestern United States. 
Spikes 1-4, erect or spreading; spikelets numerous, pectinately arranged. 
Rachilla bearing the rudimentary scales and awns glabrous; second scale strongly papillose- 
hispid on the keel. fh 1. B. hirsuta. 
Rachilla bearing the rudimentary scales and awns with a tuft of long hairs at the apex; second 
scale scabrous and sparingly long-ciliate on the keel. 2. B. oligostachya, 
Spikes numerous, spreading or reflexed; spikelets few or several, diverging from the rachis. 
3. B. curtipendula. 
