Scientific name
Schoenoplectus supinus (L.) Palla
Common name
Dwarf clubrush
Khmer/Indigenous name
–
Family
Cyperaceae
Plant type
Sedge
Description/ Characteristics
Annual plant forming tufts, 5–30 cm tall. Roots are fibrous, small. Stem 0.8–2 mm diameter, terete or distal parts obscurely trigonous, grooved, green or greyish green, smooth. Sheaths up to 65 mm long, 2–3; ligule up to 0.8 mm long, scarious; blades reduced to mucro or, in uppermost sheath, most often green, up to 50 mm long. Inflorescence 7–20 mm diameter, congested to spherical group of (1–)3–15 spikes. Spikes 5–12 mm, ovoid; glumes rather tightly imbricating, 2–4 mm, cymbiform, brown or reddish brown. Perianth reduced, bristles 3–4, occasionally elongated, unequal, longest shorter than fruit; stamens 3, anther 0.5–0.7 mm long; stigmas 3. Achene ca 1.5 x 1 mm, widely obovoid, apiculate, black brown.
Habitat
Wet places, paddy fields, moist meadows along valleys. Occurs in lowland rice fields.
Control methods
http://www.knowledgebank.irri.org/step-by-step-production/growth/weed-management
Reference
http://www.efloras.org/florataxon.aspx?flora_id=5&taxon_id=242101176
http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=242101176
Image copyright
Dr Robert J. Martin
University of Sydney
bob.martin@sydney.edu.au
e-Flora India
http://www.eflorakkl.in/
WeedID Project 