Arctium nemorosum Lej.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Asteraceae
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Scientific Name
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Description
Species Description - With larger heads mostly 3–3.5 cm thick, is only casually intr. with us. It may reflect past hybridization of nos. 1 [Arctium minus Schkuhr] and 3 [Arctium lappa L.].