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  Aeschynomene aspera
  Family: FABACEAE/LEGUMINOSAE (Subfam.: Papilionoideae)
  Citation:  Aeschynomene aspera L., Sp. Pl. 173. 1753; Hook. f., Fl. Brit. India 2: 152. 1834; Gamble, Fl. Pres. Madras 331(234). 1918; Antony, Syst. Stud. Fl. Kottayam Dist. 118. 1989; Joseph, Aquatic Angiosp. Malabar 167. 1991; Sunil & Sivadasan, Fl. Alappuzha Dist. 197. 2009.
  Malayalam Name(s): Neerkadasam, Ponguchedi
  Tamil name(s):
  English name(s): Pith plant
  Description: Marshy herbs or shrubs 1-2.5 m tall; stem spongy, pith-like, often 1.5 cm or more in diam. Leaves 7-15 cm long; leaflets sessile, 25-50 pairs, 0.6-1 x 0.1-0.2 cm, linear-oblong, base obtuse, oblique, margins ciliolate, apex obtuse, apiculate, stipules 0.7-1.5 cm long, lanceolate, peltate. Racemes axillary, 2-4-flowered, to 5 cm long. Flowers 15-20 mm long; bracts 3-5 x 1.5-3 mm, cordate, hispid; bracteoles 4-5 mm long, ovate, acute, ciliolate. Calyx 5-7 mm long, hispid. Corolla yellow; standard petal c.1.8 x 1.5 cm; wings c. 8 x 4 mm; keels 1.8 x 0.8 cm, hirsute without. Staminal sheath to 7 mm long; anthers c. 2 mm long, ovoid. Ovary to 1 cm long, tomentose; ovules many; style to 6 mm long. Pods 5-7 x 0.7-0.8 cm, compressed, 4-8-articulate, echinate over seeds, indented along both margins, dark brown. Seeds 5-6 x 3-4 mm, reniform, black.
  Habit: Shrub
  Flowering & Fruiting: August-December
  District(s): Thrissur, Kottayam, Alappuzha, Kollam, Kozhikkode
  Habitat: Marshes, paddy fields and banks of ponds
  Distribution: Indo-Malesia
  Aquatic: Yes
  Epiphyte(s): No
  Saprophyte: No
  Stem parasite: No
  Root parasite: No
  Flower colour(s): Yellow
  Weed: No
  Monocot/Dicot: Dicotyledonous Plants
  Exotic: No
  Garden: No
  Edible: No
  Vegetable: No
  Endemic to:
  IUCN status:
  Localities: Elanginelvallikavu
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