glabrous; stolons 1/16 in. in diam., clothed by pale ferruginous lanceolate scales 1/3 in. long, terminated often by zonate, ellipsoidal, woody tubers 1 in. long, not hardening ultimately into tough woody rhizomes; stems 8–16 in. long, erect at the base, rather slender at the top, trigonous, smooth; leaves often as long as the stem, 1/5 in. broad; umbel 2–6 in. in diam., usually once compound; bracts 3–4, overtopping the umbel, similar to the leaves; spikelets spicate, 1/3– 1/2 by 1/10 in., compressed, pale, often somewhat golden, 8–14-flowered; rhachilla scarious-winged; glumes ovate, lightly keeled, subobtuse, conspicuously (in dried plants) 7–9-ribbed; stamens 3; anthers linear, not crested; nut scarcely half the length of the glume, trigonous, obovoid; style much shorter than the nut, branches 3 linear, long. null
