Eupatorium fistulosum Barratt
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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 - Similar to no. 4 [Eupatorium purpureum L.], often more robust, to 3 m; stem strongly glaucous, usually purplish throughout, hollow with a large central cavity; lvs mostly in 4’s to 7’s, more elliptic, generally narrowly so, with mostly finer, more rounded, blunter teeth; cor generally bright pink-purple; 2n=20. Bottomlands and moist woods; s. Me. to Io., s. to Fla. and Tex. July–Sept.