perennial, densely tufted; culms ascending or erect, simple, slender, 1–1 1/2 ft. long, glabrous, smooth, sometimes with a ring of obscure glands below the nodes, terete, 3–5-noded, internodes exserted; sheaths tight, glabrous except at the often scantily bearded mouth, striate, lower usually short; ligule a fringe of short hairs; blades very narrow, linear, tapering to a setaceous point, flexuous, 3–5 in. by 1/2 lin., rather soft, glabrous, smooth on the back, scaberulous on the face; panicle erect, obovoid-oblong to oblong, 2–6 in. by 1–2 in., lax, shortly exserted from or enclosed at the base in the uppermost sheath; axis filiform, smooth; branches verticillate, obliquely spreading, subcapillary to capillary, glabrous or scaberulous, at least in the upper part, the longest 1–2 (rarely to 3) in. long, loosely and repeatedly divided from 2–4 lin. above the base; branchlets rather long and divaricate, or more or less contracted; pedicels very fine, long, divisions often pinkish; spikelets lanceolate, 1–1 1/2 lin. long, loosely 3–4-flowered; rhachilla subpersistent, at length disarticulating, scaberulous; glumes lanceolate in profile, acute or subacute, delicate, smooth except on the scaberulous keels, the lower sometimes nerveless, 1/2 lin. long or scarcely so, upper 2/3 lin. long; valves narrow-oblong to oblong-lanceolate in profile, subobtuse, 3/4 lin. long, membranous, smooth, except near the tips, side-nerves faint, short; pales more or less equal to the valves, keels smooth or scaberulous; anthers 2/5 lin. long. null