Much like no. 4 [Eupatorium purpureum L.], but the stems persistently spreading-glandular-hairy nearly or quite to the base, the lvs firmer, glandular-hairy beneath (like the stems), and avg broader in shape and more abruptly contracted to the petiole. Mt. woods in the Folded Appalachians Province of sw. Va. and adj. Ky. and N.C., and Tenn. July-Sept.

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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