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Subject Scientific Name Images
Canada thistle Cirsium arvense 2
common St. Johnswort Hypericum perforatum 2
leafy spurge Euphorbia esula 3
musk thistle Carduus nutans 2
purple loosestrife Lythrum salicaria 3
Scotch thistle Onopordum acanthium 2
spotted knapweed Centaurea stoebe ssp. micranthos 2

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