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  Psophocarpus tetragonolobus
 
  Family: FABACEAE/LEGUMINOSAE (Subfam.: Papilionoideae)
  Citation:  Psophocarpus tetragonolobus DC., Prodr. 2: 403. 1825; Hook. f., Fl. Brit. India 2: 211. 1876.
  Malayalam Name(s): Chathurappayar, Irachippayar
  Tamil name(s):
  English name(s): Winged bean
  Description: Annual or biennial twininers 2-3 m long, ridged and glabrous. Leaves trifoliate; leaflets generally (broadly) ovate, 8-15 cm x 4-12 cm, entire, acute, with small, 2-parted stipules. Flowers 2-10, in axillary, 5-15 cm long racemes. Calyx campanulate, with 5 short, rounded teeth, green to dark purple. Petals mauve or white, various mixtures of mauve, cream, blue and red; standard 2.5-4 cm long. Stamens diadelphous, (9 + 1). Pods oblong to linear, 7-30 x 2.5-3 cm, more or less square with 4 smooth to serrated wings 0.3-1 cm wide, rough or smooth, yellow-green,; seed 5-20 per pod, subglobose, about 0.6-1 cm long, brown, yellow, dark tan, white, uniform or variously mottled, glabrous, with a small aril.
  Habit: Climber
  Flowering & Fruiting: February-October
  District(s): All Districts
  Medicinal:
  Habitat: Cultivated
  Distribution: Native of Papua New Guinea, cultivated elsewhere
  Aquatic: No
  Epiphyte(s): No
  Saprophyte: No
  Stem parasite: No
  Root parasite: No
  Flower colour(s): White, Blue
  Weed: No
  Monocot/Dicot: Dicotyledonous Plants
  Exotic: Yes
  Garden: No
  Edible: No
  Vegetable: Yes
  Endemic to:
  IUCN status:
  Altitude:
  Localities:
   
 
   
 
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