GRASS FAMILY. 



2. Gymnopogon brevifolius Trin. 



Short-leaved Gymnopogon. 



(Fig. 409.) 



Gymnopogon brevifolius Trin. Unifl. 238. 1824. 



Culms i-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 i'-2' 

 long, i // -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, i^" 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. 



52. SCHEDONNARDUS Steud. Syn. PI. Gram. 146. 1855. 



An annual grass with branching culms, narrow leaves and slender spike* arranged along 

 a common axis. Spikelets i-flowered, sessile and alternate on the rachis. Scales 3; the a 

 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 graft* to the 

 genus Nardus.~\ 



A inonotypic genus of central North America. 



i. Schedonnardus paniculatus iN 

 Trelease. Schedonnardus. (Fig. 41 



Lepturus paniculatus Nutt. Gen. i: 8t. 1818. 

 Schedonnardus Tf.ranus Bf ,ram. 146. 



1855. 

 Schedonnani it ^ <! nit ulatus Trcleasc, Brenner & Co- 



ville, Rep. Geol. Surv. Ark. 1888: Part 4, jfc 1891. 



Culms 8'-i8' tall, erect, slender, rigid, branch- 

 ing at the base, scabrous. Sheaths crowded at the 

 base of the culm, compressed, smooth and gla- 

 brous; ligule i" long, truncate; leaves I'-lf long. 

 i" 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 \W-\W long, sessile and appressed. alter- 

 nate; scales hispid on the keel, the second longer 

 than the first and exceeded by the acute third owe. 



Manitoba and As.siniN.ia. south to Illinois, Ten* 

 and New Mexico. July Sept. 



53. BOUTELOUA Lag. Var. Cienc. y Litter. 2: Part 4, 134- & 



Annual or perennial grasses with flat or convolute leaves and numerous spik< 

 sided spikes. Spikelets i-2-flowered, arranged in two rows on one si 

 rachilla extended beyond the base of the flowers, bearing 1-3 awns and i 

 Two lower scales empty, acute, keeled; flowering scale broader, 3-to 

 pointed or awned; palet hyaline, entire or 2-toothed. 

 plumose. Grain oblong, free. [In honor of Claudius Boutelou. a Spai 



About 30 species, particularly numerous in Mexico and in tli 

 Spikes 1-4, erect or spreading; spikelets numerous, pectinately arrs 



Rachilla bearing the rudimentary scales and awns K labrou; V/Tfi' 



hispid on the keel. 



Rachilla bearing the rudimentary scales and awns with a tuft of low bain 



