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Berberis thunbergii DC.
Japanese barberry
Invasive
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Berberis vulgaris L.
common barberry
Invasive
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Berberis ×ottawensis C.K.Schneid.
= Berberis thunbergii x vulgaris
hybrid barberry
Introduced
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Caulophyllum thalictroides (L.) Michaux
blue cohosh
Native
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Epimedium ×rubrum C.Morren
= Epimedium alpinum 'Rubrum'
= Epimedium alpinum × E. grandiflorum
red barrenwort, red bishop's hat
Introduced
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Podophyllum peltatum L.
mayapple, wild mandrake
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