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  Aponogeton appendiculatus
 
  Family: APONOGETONACEAE
  Citation:  Aponogeton appendiculatus van Bruggen, Blumea 16: 264. 1968; Sunil & Sivadasan, Fl. Alappuzha Dist. 733. 2009; Ratheesh Narayanan, Fl. Stud. Wayanad Dist. 915. 2009.
  Malayalam Name(s):
  Tamil name(s):
  English name(s):
  Description: Perennial water-plants, 40-150 cm high. Tubers up to 2 cm across, oblong or globose. Leaves all submerged, 30-80 x 2.5 - 4.5 cm, oblong-lanceolate, base narrowly cuneate, margins undulate, apex acute or acuminate, mature leaves purplish; petiole 10-25 cm long. Spikes 3-12 cm long (fruiting spike upto 35 cm long), cylindrical, densely flowered; spathe 2-5 cm long, conical, acuminate, calyptrate, 6-7-sided, angles winged, caducous; peduncle 40-135 cm long, narrowed at base and gradually thickening towards apex, dark brown. Flowers 4-5 mm across, in groups about 4. Tepals 2, white with pink tinge, 2-2.5 x 2-2.5 mm, obovate or suborbicular, base cuneate, apex obtuse, fleshy, persistent. Stamens 5-6; filaments 1-1.5 mm long, widened towards the base, white, persistent; anthers c. 0.5 mm long, ovoid, yellow. Ovaries 2-3, 1-1.5 x 1-1.5 mm, conical; ovules 1 or 2. Fruit 0.8-1.5 x 0.5-1 cm, conical, with scattered blunt spines, base violet, apex beaked. Embryo very unusual, 0.7-1.2 x 0.3-0.6 cm, obovate, tuberous, crowned with a whorl of linear tortuous appendages of 3-5 mm long.
  Habit: Herb
  Flowering & Fruiting: July-March
  District(s): Alappuzha, Wayanad, Thrissur
  Medicinal:
  Habitat: Ponds and ditches
  Distribution: Southern Western Ghats
  Aquatic: Yes
  Epiphyte(s): No
  Saprophyte: No
  Stem parasite: No
  Root parasite: No
  Flower colour(s): White
  Weed: No
  Monocot/Dicot: Monocotyledonous Plants
  Exotic: No
  Garden: No
  Edible: No
  Vegetable: No
  Endemic to: Southern Western Ghats
  IUCN status: Endangered (EN)
  Altitude:
  Localities: Vembanad, R. Block, Kanjippadam
   
 
   
 
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