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  • Equisetum hyemale

      Unwanted organism
    • Rough horsetail, giant horsetail

    • Scientific Name: Equisetum hyemale
    • Origin: Eurasia and North America
    • Type: Weed
    • Plant Life-form Type: Marginal erect/tall
    • Taxonomy: L.
    • Presence: Naturalised sites include Whangarei, Auckland, New Plymouth, Levin, Motueka, Greymouth, Fox River and Christchurch
    • Habitat: Riparian habitats with moist sandy soil, marshes and ditches
    • Notes: Dense growth can be problematic in fields, pastures and controlled aquatic systems.
    • Propagation: Rhizomes
    • Features: Perennial species with green stems ca 2m tall. Stems are thick (5 to 15mm) wide, ribbed and unbranched or with few branches at some nodess. Leaf sheaths are 10 to 15mm long and wide, mostly with 2 dark bands (top and bottom) with numerous deciduous teeth. Spore bearing spikes are ovoid (10 to 30 mm long) with an arbuptly pointed tip.
    • Source: TIFBIS
    • Regional: Regional Pest Management Strategy:CAN
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