Perennial with stoloniferous rhizome. Stems stout, triquetrous, smooth, 70-125(-175) cm by 4-7(-10) mm, the base clothed with spongious, greyish brown to purplish sheaths. Leaves canaliculate, spongious or coriaceous, firm, gradually acuminate, scabrid at the top, up to 9(-15) mm wide. Inflorescence simple or subcompound, loose, relatively small, 10-15 cm long. Involucral bracts 3-4, obliquely erect to spreading, the larger one(s) far overtopping the inflorescence, up to 50(-70) cm long. Primary rays 3-7, very unequal, more or less spreading, smooth, the longest 6-12(-20)cm; secondary rays when present very short. Spikes broadly ovoid, loose, 2-4 cm long and wide; rachis angular, (in Malesian specimens) more or less scabrous-hispid. Spikelets up to 10(-18) to the terminal spike, only 3-4 to the lateral ones, spicately arranged, patent, the lower ones at right angles to the rachis, oblong to broadly linear, often slightly curved, compressed, up to 40-flowered, 10-35 by 2½-3½ mm; rachilla straight, not or hardly winged, persistent; internodes c. ¾ mm. Glumes membranous, patulous, ovate or elliptic, obtuse, hardly keeled, c. 7-nerved, reddish brown with broad hyaline margins in the upper part, ½ imbricate, 2½-3 by c. 2 mm. Stamens 3; anthers linear, (1-)1½-2 mm long, with very short, smooth appendage of the connective. Stigmas 3. Nut triquetrous, obovoid or ellipsoid, minutely apiculate, blackish brown, c. 1½ by ¾ mm.
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Perennials. Rhizomes with long stolons. Culms 45-85 cm tall, stout, compressed triquetrous. Leaves basal, equaling or slightly longer than culm; sheath reddish brown; leaf blade 5-10 mm wide, ± flat. Involucral bracts 3, leaflike, basal 1 or 2 longer than inflorescence. Inflorescence a simple or compound anthela; rays 3-7, mostly to 15 cm, unequal in length, obliquely spreading, smooth. Spikes 1-5, broadly ovoid, with 4-16 spikelets; rachis hispidulous or glabrous. Spikelets laxly arranged, narrowly linear-ovoid to linear-ovoid, 10-25 × ca. 3 mm, slightly turgid, obliquely spreading to spreading, 14-36-flowered; rachilla wings white, narrow, hyaline. Glumes yellowish brown and reddish brown punctate but middle greenish, slightly densely imbricate, broadly ovate, 2.5-3 mm, membranous, 7-9-veined, keeled, margin white hyaline and undulate, apex obtuse. Stamens 3; anthers linear-oblong, 1.2-1.8 mm; connective slightly prominent beyond anthers. Style short; stigmas 3. Nutlet brown, obovoid, 1.3-1.5 mm, ca. 1/2 as long as subtending glume, 3-sided, essentially smooth. Fl. and fr. Jun-Oct. 2n = 18, 64.
A fairly robust, perennial herb, up to 0.9 m high. Stolons covered by distantly spaced, blackish scales. Inflorescence a lax or somewhat congested anthela. Axis of spike hairy. Glumes dark brown.
A small umbel of flattened spikelets with membranous-edged, brown glumes
Stoloniferous sedge to about 120 cm. high
Open, moist or wet, often brackish localities: swamps, pools, wet rice-fields, often near the sea, at elevations up to 50 metres. Fields, water margins, wet places, often in sandy soil; at elevations below 100 metres. M
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In open, moist or wet, often brackish localities: swamps, pools, wet rice-fields, often near the sea, 0-50 m, a few times collected near Bogor (W. Java) at c. 250 m.
Marshy grassland, rice farms and near open water.
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