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Herbarium specimen. Copyright DERM

Cyperus sulcinux

Family

Cyperaceae

Botanical Name

Cyperus sulcinux C.B.Clarke

Clarke, C.B. (1884) Journal of the Linnean Society, Botany 21: 56. Type: ?.

Stem

Annual with fibrous yellowish roots. Stems tufted, triquetrous above, 5-30 cm long.

Leaves

Leaves rigid, flat to caniculate, scabrid at the top, 1-2 mm wide; lower sheaths purplish, ligules well-developed.

Flowers

Inflorescencesimple, loose; involucral bracts 3-4, lower ones overtopping the inflorescence. Rays 3-6, slender, up to 7 cm long. Spikes broadly ovoid with 5-10 spikelets, spikelets widely spreading with the lower ca. reflexed, lanceolate to linear, strongly compressed, 10-50 -flowered, rachilla narrowly winged. Glumes membranous, sharply keeled, obtuse, keel fuscous, 3-nerved, sides reddish brown with hyaline margins.

Fruit

Nut 2-sided, laterally compressed with 2 longitudinal depressions, oblong, apex truncate, dark brown, 1.25-1.5 mm long, smooth and glossy; with remains of style.

Seedlings

Features not available.

Distribution and Ecology

Occurs in NEQ and CYP. Altitudinal range from near sea level to 80 m. Grows in closed forest, Eucalypt forest and Melaleuca forest. Also from India, Malesia to New Guinea.

CYP

X

NEQ

X

Grass

X

RFK Code

4205