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  Ludwigia peruviana
  Citation:  Ludwigia peruviana (L.) H. Hara, J. Jap. Bot. 28: 293. 1953; Manilal, Fl. Silent Valley 114. 1988; Ramach. & V.J. Nair, Fl. Cannanore Dist. 196. 1988; Babu, Fl. Malappuram Dist. 278. 1990; Vajr., Fl. Palghat Dist. 208. 1990; Sivar. & Mathew, Fl. Nilambur 283. 1997; Sasidh., Fl. Parambikulam WLS 132. 2002; Barua, Rheedea 20: 66. 2010; Ratheesh Narayanan, Fl. Stud. Wayanad Dist. 385. 2009. Jussiaea peruviana L., Sp. Pl. 388. 1753. Jussiaea speciosa Ridley, J. Bot. 59. 1921; Gamble, Fl. Pres. Madras 1875(1298). 1936.
  Malayalam Name(s):
  Tamil name(s):
  English name(s):
  Description: Shrubs 5-30 cm tall, villous throughout, the hairs usually multicellualr; long inflated pneumatophores arising from submerged roots. Leaves simple, alternate, 4-12 x 0.3-1.5 cm, lanceolate to broadly lanceolate, apex acute to acuminate, base narrowly cuneate; petioles 3-12 mm long. Flowers from the upper leaf axils; bracteoles absent or up to 7 mm long. Sepals 4-5, lanceolate, 10-18 mm long, villous, irregularly serrulate. Petals bright yellow, suborbicular, 18-24 mm long, shallowly emarginate, with a claw 1-3 mm long. Stamens twice as many as the sepals, subequal; anthers extrorse. Disk at apex of ovary elevated 1-2 mm, with depressed white-pubescent nectary around the base of each epipetalous stamen, style 1 mm long; stigma elongate-hemispherical. Capsule than walled, 1.2-3 cm long, villous, 4-angled, with 4 prominent dark brown ribs, readily and irregularly dehiscent; pedicel 2-4.5 cm long; seeds in several rows in each locule, free, obovoid, 0.6-0.8 mm long, pale brown, finely striate and pitted.
  Habit: Shrub
  Flowering & Fruiting: March-April
  District(s): Palakkad, Malappuram, Kannur, Wayanad, Thrissur
  Habitat: Marshy areas
  Distribution: Originally from America now naturalised throughout the Old World
  Aquatic: Yes
  Epiphyte(s): No
  Saprophyte: No
  Stem parasite: No
  Root parasite: No
  Flower colour(s): Yellow
  Weed: Yes
  Monocot/Dicot: Dicotyledonous Plants
  Exotic: Yes
  Garden: No
  Edible: No
  Vegetable: No
  Endemic to:
  IUCN status:
  Localities: Orukomban, Mukkali forests, Valiyaparathode, on way to Alathur, Attapady block-Mukkali, Karivara slopes, Karimpuzha
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