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Yellow toadflax
Linaria vulgaris

Yellow toadflax (Linaria vulgaris) is an invasive plant. It is a native of Europe and Asia and was first detected in Idaho in 1987.

It has escaped from cultivation in North America where it is a common naturalised weed of roadsides and poor soils. It is listed as an invasive species in several U.S. states and Canadian provinces.

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