Canada thistle
(Cursium arvense) (L.) Scop. (Asteraceae)
Canada thistle. Photo by Sari Breitenfeldt 5/21/2000

Canada thistle seedling. Photo by Skye Breitenfeldt
Canada thistle seedlings and young plants.  Photos by Sari and Skye Breitenfeldt 5/21/2000.

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