This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol1", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
An annual grass with branching culms, narrow leaf-blades and slender spikes arranged along a common 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, resembling the genus Nardus.]
Lepturus paniculatus Nutt. Gen. 1: 81. 1818. Schedonnardus texanus Steud. Syn. PI. Gram. 146. 1855. Schedonnardus paniculatus Trelease, Branner & Coville, Rep. Geol. Surv. Ark. 1888: Part 4, 236. 1891.
Culms 8'-18' tall, erect, slender, rigid, branching at the base, scabrous. Sheaths crowded at the base of the culm, compressed, smooth and glabrous; ligule 1" long, truncate; blades l'-3' long, 1" wide or less, flat, usually erect; spikes numerous, rigid, widely spreading, alternate, the lower 2'-4' long, the axis and branches triangular; spikelets 1 1/4"-1 1/2" long, sessile and appressed, alternate; scales hispid on the keel, the second longer than the first and exceeded by the acute third one.