Eleocharis dregeana Steud.

Perennial herb, 0.1-0.5 m high, long-rhizomatous. Leaf blades absent. Culm scapose, terete, 1-3 mm in diam. Inflorescence a single, terminal, lanceolate spikelet, the longest 15-20 mm long, many-flowered. Subtending bract 1, glume-like. Glumes broadly oblong when flattened, 2.5-3.0 mm long, keeled, keel non-excurrent. Style branches 2 or 3. Perianth 6 reddish brown, retrorsely barbate bristles. Flowering time Sept., Oct., Jan. Nutlet obovate, 1.5-1.8 x 1.0-1.2 mm, biconvex or obscurely 3-angled, light brown, crowned by persistent, triangular, whitish style base, surface smooth or minutely reticulate.