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  Argyreia hirsuta
  Citation:  Argyreia hirsuta Wight & Arn., Nov. Acta Phys. Med. Acad. Caes. Leop. Carol. Nat. Cur. 18: 356. 1836; Hook. f., Fl. Brit. India 4: 189. 1883; Gamble, Fl. Pres. Madras 909(638). 1923; Mohanan, Fl. Quilon Dist. 269. 1984; Ramach. & V.J. Nair, Fl. Cannanore Dist. 297. 1988; Antony, Syst. Stud. Fl. Kottayam Dist. 259. 1989; Vajr., Fl. Palghat Dist. 306. 1990; M. Mohanan & Henry, Fl. Thiruvanthapuram 312. 1994; Subram., Fl. Thenmala Div. 234. 1995; Sasidh. & Sivar., Fl. Pl. Thrissur For. 305. 1996; Sasidh., Fl. Shenduruny WLS 215. 1997; Sasidh., Fl. Periyar Tiger Reserve 263. 1998; Sasidh., Fl. Parambikulam WLS 205. 2002; Anil Kumar et al., Fl. Pathanamthitta 335. 2005; Sunil & Sivadasan, Fl. Alappuzha Dist. 464. 2009; Ratheesh Narayanan, Fl. Stud. Wayanad Dist. 554. 2009. Rivea hirsuta (Wight & Arn.) Wight, Ic. t. 891. 1845. Argyreia hirsuta Wight & Arn. var. coacta Clarke in Hook.f., Fl. Brit. India 4: 189. 1883; Swarup. et al., Shola For. Kerala 46. 1998.
  Malayalam Name(s): Onappoo, Pathvan
  Tamil name(s):
  English name(s):
  Description: Climbing undershrubs; stem hirsute. Leaves simple, alternate, 13-20 x 7-14 cm, broadly ovate, apex abruptly acuminate, base cordate, densely strigose above, tomentose beneath; nerves 7-13 pairs, prominent below; petiole 5-11 cm long, densely pubescent. Flowers in axillary few to many flowered cymes; bracts leafy, to 3 cm long, lanceolate, shortly petioled, persistent. Sepals 6-8 x 2-3 mm, oblong, obtuse, sparsely hairy, equal. Corolla 5-7 cm long, funnel-shaped, pale purple, hispid without. Stamens 5. Style filiform; stigma 2-globose. Berry 8-12 mm across, depressed-globose, yellow; seeds embedded in mealy pulp.
  Habit: Climber
  Flowering & Fruiting: November-December
  District(s): Palakkad, Kottayam, Alappuzha, Idukki, Kollam, Pathanamthitta, Kannur, Thiruvananthapuram, Thrissur, Wayanad
  Habitat: Deciduous and shola forests, also in the plains
  Distribution: South India and Sri Lanka
  Aquatic: No
  Epiphyte(s): No
  Saprophyte: No
  Stem parasite: No
  Root parasite: No
  Flower colour(s): Pink, Violet
  Weed: No
  Monocot/Dicot: Dicotyledonous Plants
  Exotic: No
  Garden: No
  Edible: No
  Vegetable: No
  Endemic to:
  IUCN status:
  Localities: Elanad, Rosemala, Koruthode, Vengoli, Velayudhankayi, Moozhiar, Arampa, Pathenthode, Manantody, Devicolam, Chindaki forest, Angadikkal, Teppakulam
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