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  Cyperus arenarius
 
  Family: CYPERACEAE
  Citation:  Cyperus arenarius Retz., Obs. Bot. 4: 9. 1786; Hook. f., Fl. Brit. India 6: 602. 1893; Gamble, Fl. Pres. Madras 1640(1140). 1931; Manilal & Sivar., Fl. Calicut 318. 1982; Ansari, Fl. Kasaragod Div. 417. 1985; Ramach. & V.J. Nair, Fl. Cannanore Dist. 503. 1988; Babu, Fl. Malappuram Dist. 859. 1990; Rejani, Cyperac. Kerala 188. 1991; Sunil & Sivadasan, Fl. Alappuzha Dist. 751. 2009. Cyperus conglomeratus Rottb. var. arenarius (Retz.) Cass., Explor. Algir. Bot. 2: 245. 1855.
  Malayalam Name(s):
  Tamil name(s):
  English name(s):
  Description: Perennial, 6-30 cm. Rhizome long creeping, deep in sand, c.1 mm diam. Roots thin, not tomentose. Stem c.1 mm diam., almost terete, smooth. Leaves c. equalling the stem; sheaths 20-40 mm, strongly nerved, rigid, with brown veins, disintegrating into fibres with age, mouth margin straight; ligule 0; blades c. 1 mm wide, stiff, curved, greyish green, semi-circular in transverse section, margins slightly scabrous, apex flat, blunt or acute, slightly scabrous. Inflorescence c. 20 mm diam., capitate, with 5 to more than 20 spikes, seldom with some elongated branches; bracts 1-2 foliose, up to 50 (100) mm, rigid, sheath-less, one often as continuation of stem; spikes 8-20 mm, ovoid, compressed, glumelike bracts c. 5 mm, glume-like prophyll 4 mm, widely ovate, with scarious margins, blunt; glumes 14-24, closely imbricating, caducous, 4-5 mm, cymbiform, with rounded back, pale brown, mucronate, sides with c. 6 obscure nerves, which often reddish brown, margins scarious; rachis zigzagging, c. 1 mm wide, internodes c. 0.5 mm, margins sharp, hardly winged. Stamens 3. Nut 1.5-1.7 x c. 1.3 mm, obovoid, plano-convex, compressed, brown or dark brown, almost smooth, glossy.
  Habit: Herb
  Flowering & Fruiting: October-December
  District(s): Alappuzha, Kasaragode, Kannur, Malappuram, Kozhikkode
  Medicinal:
  Habitat: Sandy beaches
  Distribution: Southern and Central Asia, also in Sri Lanka
  Aquatic: No
  Epiphyte(s): No
  Saprophyte: No
  Stem parasite: No
  Root parasite: No
  Flower colour(s):
  Weed: No
  Monocot/Dicot: Monocotyledonous Plants
  Exotic: No
  Garden: No
  Edible: No
  Vegetable: No
  Endemic to:
  IUCN status:
  Altitude:
  Localities: Cannanore, Manjeswar, Ambalapuzha
   
 
   
 
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