Cyperus malaccensis

Perennial, more than 1 m; rhizome with short stolons. Stem 4-6 mm in diam., sharply trigonous, sides concave above. Leaves reduced; sheaths few, up to more than 30 cm, grey-brown or reddish, lowest bladeless; ligule 0 (?); blades 1-3, short, up to c.10 mm wide, flat, margins smooth, apex acute, smooth or scabrous. Inflorescence simple anthelodium, up to more than 10 cm diam., usually wider than long; bracts 3-4, longer than inflorescence; primary branches up to 7 cm, spreading, tubular prophylls up to c.8 mm; cluster of spikes with usually more than 15 spikes, in almost spherical group, lowest often almost digitately pedunculate. Spikes 10-25 x 1.5-2 mm, with 10-40 glumes, glume-like bract c. 1 mm, acute, glume-like prophyll bi-nerved, blunt, base spongy; rachis almost straight, quadrangular with sharp, narrowly winged angles; glumes c.2.2 mm, cymbiform when fresh, almost flat, inwards curved when dry, blunt, reddish-brown, mid-nerve not prominent, margins scarious, grey-yellow. Anthers c.1 mm. Nut c.1.8 x 0.5 mm, trigonous, slightly compressed, dark brown, glossy, very finely reticulate.

Submission of Cyperus malaccensis : 2 posts by 2 authors. Attachments (2)  

References:

Catalogue of Life  The Plant List Ver.1.1  WCSP  IPNI
 GBIF (with type specimen) Flora of China 
Flora of Pakistan  FOP illustration Annotated checklist of Flowering plants of Nepal  India Biodiversity Portal  Kerala plants  Useful Tropical Plants  Flora Malesiana