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  • Nymphoides geminata

      Unwanted Organism, National Pest Plant Accord
    • Marshwort

    • Scientific Name: Nymphoides geminata
    • Origin: Australia
    • Type: Weed
    • Plant Life-form Type: Floating-leaved
    • Taxonomy: (R. Br.) Kuntze
    • Presence: Locally naturalised, eradicated from most known sites, first record from Lake Okareka, Bay of Plenty in 1985
    • Habitat: Still and slow flowing water bodies
    • Notes: Problem in still water bodies, poor dispersal capacity has limited spread.
    • Propagation: Vegetative spread by creeping stem growth and fragmentation. Deliberate plantings
    • Features: Underwater stem creeping or floating near the surface, with leaves and roots at each note. Leaves are heart-shaped and up to 10 cm across. Bright green on upperside and often pinkish on the underside. The main vein is indistinct. Flowers are bright yellow, with 5 petals that have fringed marginal wings.
    • Source: TIFBIS
    • Regional: Regional Pest Management Strategy: AUK, BOP, CAN, NSN/TAS, NTL, WKO.
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