Cyperus tenuiculmis

Cyperus tenuiculmis Boeckeler, Linnaea 36: 286 1870. (syn: Cyperus bracteatus Steud.; Cyperus hemadrii M.R.Almeida [Illegitimate]; Cyperus hexastachyus Nees [Illegitimate]; Cyperus tenuiculmis var. tenuiculmis ; Cyperus wightii Hance [Illegitimate]; Cyperus zollingeri var. condensatus Kük.; Cyperus zollingeri f. levicaulis C.B.Clarke; Cyperus zollingeri var. livingstonii Kük.; Cyperus zollingeri var. longiramulosus Kük.; Cyperus zollingeri var. parvus C.B.Clarke);

Trop. Africa to N. Australia as per WCSP;

Angola; Assam; Bangladesh; Benin; Bismarck Archipelago; Borneo; Burkina;
Burundi; Cambodia; Cameroon; Caroline Is.; Central African Repu; Chad; China
South-Central; China Southeast; Congo; East Himalaya; Equatorial Guinea; Gabon;
Gambia; Ghana; Guinea; Guinea-Bissau; Gulf of Guinea Is.; Hainan; India; Ivory
Coast; Jawa; Kenya; Laos; Lesser Sunda Is.; Liberia; Malawi; Malaya; Mali;
Maluku; Myanmar; Nepal; New Guinea; Nigeria; Northern Territory; Philippines;
Queensland; Rwanda; Senegal; Sierra Leone; Socotra; Sri Lanka; Sudan; Sulawesi;
Sumatera; Taiwan; Tanzania; Thailand; Togo; Uganda; Vietnam; Zare as per Catalogue of Life;

Culm solitary, to 45 cm, 3-quetrous, ribbed, base incrassate. Leaves as long as culm, or shorter, to 0.25 cm wide, acute, nerves prominent. Inflorescence compound, open, to 6 cm; involucral rays 3, overtopping, the longest to 20 cm; primary rays 3-5. Spikelets 2-10, spicate or racemose, at right angles to rachis. Spikelets narrow-oblong, to 1.5 x 0.1 cm, yellow, compressed, 10-15-flowered; rachilla persistent, wing to 0.1 cm. Glumes imbricate, ovate, 0.25 cm, mucronulate, sides 4-6-nerved, margin hyaline; keel 3-nerved. Stamens 3. Nut ellipsoid, 3-quetrous, 0.1 cm, apiculate, stalked.

Flowering and fruiting: September-October

Swamps

Paleotropics

(attributions- Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi from India Biodiversity Portal);