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  Blyxa octandra
  Citation:  Blyxa octandra (Roxb.) Planch. ex Thw., Enum. Pl. Zeyl. 332. 1864; Gamble, Fl. Pres. Madras 1397(978). 1928; Manilal & Sivar., Fl. Calicut 281. 1982; Mohanan, Fl. Quilon Dist. 386. 1984; Ansari, Fl. Kasaragod Div. 364. 1985; Antony, Syst. Stud. Fl. Kottayam Dist. 378. 1989; Ramach. & V.J. Nair, Fl. Cannanore Dist. 443. 1988; Babu, Fl. Malappuram Dist. 769. 1990; Joseph, Aquatic Angiosp. Malabar 423. 1991; M. Mohanan & Henry, Fl. Thiruvanthapuram 442. 1994; Subram., Fl. Thenmala Div. 362. 1995; Sunil & Sivadasan, Fl. Alappuzha Dist. 670. 2009; Ratheesh Narayanan, Fl. Stud. Wayanad Dist. 913. 2009. Vallisneria octandra Roxb., Pl. Corom. 2: 34, t. 165. 1802. Blyxa roxburghii L.C.Rich., Mem. Inst. Paris. 12: 23-24, tt. t. 5. 1812; Hook. f., Fl. Brit. India 5: 660. 1888.
  Malayalam Name(s):
  Tamil name(s):
  English name(s):
  Description: Aquatic herbs. Leaves elongate, 10-16 x 0.5-1 cm, 7-9-nerved, glabrous, narrow at base, apex attenuate. Flowers dioecious. Male spathes 7-8 x 0.2-0.3 cm. Flowers to 1 x 0.3 cm, 6-9 per spathe; peduncle equal or exceeding leaves; pedicel 1.5-3 cm. Sepals 3, oblong, 9 x 1.5 mm, obtuse. Petals to 3.5 x 0.1 mm. Stamens 9(10-12); filaments unequal, 0.5-1.5mm; anthers subequal, to 3 mm; pistillodes 3, somewhat connate at base, to 2 mm. Female plants often dwarfed, to 10 cm: flower solitary; peduncle slightly overtopping leaves, to 12 cm; pedicel 0. Ovary 2 x 0.1 cm, equal to spathe, rostrum 3-7 cm, filiform. Fruit to 4 cm, torulose, finely ribbed, glabrescent; seeds ovoid-oblong, not tailed, 1.5 x 0.8 mm, subacute-obtuse at the ends, alternately long-/short-tubercled in 7 or 8 rows.
  Habit: Herb
  Flowering & Fruiting: June-October
  District(s): All Districts
  Habitat: Stagnant pools, ponds and in flooded paddy fields
  Distribution: Indo-Malesia to Australia
  Aquatic: Yes
  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:
  Localities: Kannoth, Kalliassey, Mambaram, Bela, Velvara, Thamarakulam, Thenmalai
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