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Tier 1 - Threat

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Carex kobomugi Asiatic sand sedge, Japanese sedge
Vitex rotundifolia Beach vitex, Roundleaf chastetree
Lepidium latifolium Broad-leaved pepper-grass
Myriophyllum heterophyllum Broadleaf/variable-leaf watermilfoil
Kalopanax septemlobus Castor aralia
Imperata cylindrica Cogon grass
Didymosphenia geminata Didymo
Ludwigia peploides Floating primrose willow
Pennisetum alopecuroides Fountain grass
Hydrocharis morsus-ranae Frogbit
Nandina domestica Heavenly bamboo
Impatiens glandulifera Himalayan balsam, Policeman's helmet
Achyranthes japonica Japanese Chaff Flower
Murdannia keisak Marsh dewflower
Glyceria maxima Reed manna grass
Tamarix ssp. (T. chinensis, T. parviflora, T. ramossima) Saltcedar, Tamarisk
Bythotrephes longimanus Spiny waterflea
Crassula helmsii Swamp crop, Pygmyweed
Ludwigia hexapetala Uruguayan primrose willow
Ludwigia adscendens Water primrose
Oplismenus hirtellus ssp. undulatifolus Wavyleaf basketgrass
Subscribe to Tier 1 - Threat