Volume 6 > Part 4 > Year 1998 > Page 401 > Cyperaceae > Kyllinga

6. Kyllinga nemoralis (J.R. Forst. & G.Forst.) Dandy ex Hutch. & Dalzielwfo-0000454753

Fl. W. Trop. Afr. 2: 486, in key, & 487. 1936; T.Koyama, Gard. Bull. Singapore 30: 163. 1977.— Thryocephalon nemoralis J.R.Forst. & G.Forst., Char. Gen. Pl. 130. 1776. Plate XXIX: 3.

Accepted Name : Cyperus mindorensis (Steud.) Huygh
Phytotaxa 166: 39. 2014.

Synonyms & Citations :

Description : Rhizomatous perennial; rhizome long-creeping. Culms crowded or distant in series along rhizome, 10–45 cm by 1–1.5 mm, triquetrous, smooth. Leaves: blade linear, 1–16 cm by 2–5 mm, acute, flattish; sheath 1–9 cm long, brown to purplish brown. Involucral bracts 3–4, the longest up to 30 cm long. Inflorescence capitate. Spikes 1–4, globose, terminal spike 0.5–1.2 by 0.7–1 cm, lateral spikes much smaller. Spikelets ovate-elliptic to ovate-lanceolate, 2.7–3.5 by 1.5 mm, 1–2-flowered. Glumes usually 5, elliptic to broadly elliptic, 1–3.5 mm long, shortly recurved-cuspidate, sides thinly membranous, 3–4-nerved, white becoming pale brown, keel broadly winged, serrulate, green. Stamens 3; anthers 0.8–1 mm long. Nutlets oblong-obovate or suborbicular, 1.2–1.5 by 0.5–0.7 mm, maturing brownish.

Thailand : Common throughout the country.

Distribution : Pantropical (Africa – type).

Ecology : Open or slightly shaded grasslands, waysides and margins of forests, up to 1,000 m alt.

Vernacular : Ya tumhu (หญ้าตุ้มหู)(Central); ya nuai fai (หญ้าหน่วยฝ้าย)(Peninsular).