Arctium tomentosum Mill.
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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
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Species Description - Resembling no. 3 [Arctium lappa L.] but smaller, seldom over 13 dm; lower petioles mostly hollow; invol mostly 1.5–2.5 cm thick, ± strongly arachnoid-tomentose and the bracts only weakly or scarcely hooked; cor-limb glandular outside; 2n=36. Native of Eurasia, sparingly established in our range. June–Oct.
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Common Names
cotton-burdock