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Ludwigia peruviana
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Family:
ONAGRACEAE
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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.
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Malayalam Name(s):
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Tamil name(s):
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English name(s):
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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.
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Habit:
Shrub
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Flowering & Fruiting:
March-April
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District(s):
Palakkad, Malappuram, Kannur, Wayanad, Thrissur
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Medicinal:
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Habitat:
Marshy areas
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Distribution:
Originally from America now naturalised throughout the Old World
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Aquatic:
Yes
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Epiphyte(s):
No
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Saprophyte:
No
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Stem parasite:
No
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Root parasite:
No
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Flower colour(s):
Yellow
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Weed:
Yes
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Monocot/Dicot:
Dicotyledonous Plants
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Exotic:
Yes
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Garden:
No
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Edible:
No
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Vegetable:
No
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Endemic to:
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IUCN status:
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Altitude:
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Localities:
Orukomban, Mukkali forests, Valiyaparathode, on way to Alathur, Attapady block-Mukkali, Karivara slopes, Karimpuzha
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