Cyperus malaccensis Lam., Tabl. Encycl. 1: 146 1791. (syn: Chlorocyperus malaccensis (Lam.) Palla; Cyperus fortunei Steud.; Cyperus incurvatus Roxb.; Cyperus malaccensis subsp. malaccensis ; Cyperus malaccensis var. malaccensis ; Cyperus neesii D.Dietr. [Illegitimate]; Cyperus spaniophyllus Steud.; Cyperus tegetiformis Benth. [Illegitimate]; Cyperus wallichii Nees); Trop. & Subtrop. Asia to N. Australia as per WCSP; 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. Flowering and fruiting: September-December Banks of backwaters and ponds, and mangrove forests Paleotropics (Attributions- Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi from India Biodiversity Portal)
Plant name: Cyperus malaccensis Lam., Tabl. Encycl. 1: 146. 1791. Family: Cyperaceae Description: Perennials. Rhizomes , woody, culms 0.5-1.5 m tall, 4-6 mm thick, acutely trigonus; with 1-2 leaf sheaths; leaf blade absent; Involucral bracts 3 or 4, leaflike, unequal, one upto 40 cm long, remaing shorter. Inflorescence a simple ; rays 6-10, variable many,10-21cm long, . Spikes broadly ovoid, with 5-10 spikelets; rachist, glabrous. Spikelets laxly arranged, linear, 1-2.5 cm × ca. 1.5 mm, slightly turgid, spreading, 10-42-flowered; rachilla wings white, narrow, hyaline. Glumes reddish brown , lax, oblong to elliptic, 2-2.5 mm, papery, inconspicuously 7-9-veined, margin involute at maturity, apex obtuse to rounded. Stamens 3; anthers linear; connective prominent beyond anthers. Style short; stigmas 3, slender. Nutlet blackish brown when mature. Photographed at Nellore rural, since the plant is amidst many cyperus species, it is picked out and imaged.
The plant looks like Cyperus malaccensis Lam. found in brackish water or saline marshy habitats towards coastal areas. |
# Species- Seed plants (families) > A---L (families & genera) > Cl > Cyperaceae > Cyperus >
