Lej. & Court.
Gleason & Cronquist
Vascular plants of NE US and adjacent Canada
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.].
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
©The New York Botanical Garden. All rights reserved. Used by permission.
Open Interactive Map
Click to Display
25 Total Images