Absinth Wormwood Artemisia absinthium
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Austrian Fieldcress Rorippa austriaca
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Baby's Breath Gypsophila paniculata
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Black Henbane Hyoscyamus niger
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Blackgrass Alopecurus myosuroides
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Bull Thistle Cirsium vulgare
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Canada thistle Cirsium arvense
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Common barberry Berberis vulgaris
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Common Catsear Hypochaeris radicata
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Common Groundsel Senecio vulgaris
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Common Hawkweed Hieracium lachenalii
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Common St. Johnswort Hypericum perforatum
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Common Tansy Tanacetum vulgare
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Common teasel Dipsacus fullonum
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Curlyleaf Pondweed Potamogeton crispus
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Evergreen Blackberry Rubus laciniatus
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Field Bindweed Convolvulus arvensis
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Fragrant Water Lily Nymphaea odorata
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Hairy Whitetop Cardaria pubescens
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Hawkweed species Hieracium spp.
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Himalayan Blackberry Rubus armeniacus
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Japanese eelgrass Zostera japonica
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Jointed Goatgrass Aegilops cylindrica
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Lepyrodiclis Lepyrodiclis holosteoides
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Longspine Sandbur Cenchrus longispinus
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Old Man's Beard Clematis vitalba
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Oxeye Daisy Leucanthemum vulgare
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Perennial Sowthistle Sonchus arvensis ssp. arvensis
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Polar Hawkweed Hieracium atratum
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Reed Canarygrass Phalaris arundinacea
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Scentless Mayweed Matricaria perforata
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Smoothseed Alfalfa Dodder Cuscuta approximata
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Spiny Cocklebur Xanthium spinosum
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Swainsonpea Sphaerophysa salsula
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tree-of-heaven Ailanthus altissima
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White Cockle Silene latifolia ssp. alba
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Yellow Flag Iris Iris pseudacorus
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Yellow Toadflax Linaria vulgaris
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