Cyperus iria L.

Family: Cyperaceae

Taxonomy: Plantae > Tracheophyta > Liliopsida > Poales > Cyperaceae > Cyperus > C. iria

Common name [English]: Rice flat sedge, Umbrella sedge

Vernacular name [Malayalam]: മഞ്ഞക്കോര

Nativity: Introduced in U.S.A and West Indies

Habitat: Degraded deciduous forests, marshy areas and paddy fields

Description: Erect, not tufted, non-rhizomatous annuals; culms 12-50 cm tall, triquetrous. Leaves few, basal, 10-50 x 3-6 mm, linear, flat, gradually acuminate, scabrous on upper margins; sheaths 1-3 cm long, purplish-brown. Inflorescence compound, 8-15 cm across, diffuse, branches spicate; leafy bracts 3-5, the longest upto 35 cm long. Spikelets 4-5 x 1.5-2 mm, linear-oblong, bearing 6-10 florets, yellowish. Glumes distant, 1-1.5 x 1-15 mm, obovate-orbicular, apex rounded or emarginate, keeled, yellowish, margins white-hyaline. Stamens 2-3. Stigmas 3. Nut 1-1.5 x c. 0.5 mm, obovate, triquetrous, stipitate, brown. Pollination:self. Propagation:seed.

Flowering and Fruiting: November-December

Uses: Agri-horticulture: weeds,fodder Products: withies and twigs

Cultivation: Wild

References

http://www.plantsoftheworldonline.org

https://indiabiodiversity.org