Eupatorium cordigerum (Fernald) Fernald. Clasping Roundleaf Eupatorium. Phen: Jul-Aug. Hab: Woodlands. Dist: VA, NC, and SC west to AR and MS.
Origin/Endemic status: Endemic
Taxonomy Comments: This taxon is an apomictic, polyploid derivative of the hybrid E. perfoliatum × rotundifolium.
Synonymy: = F, Va; = Eupatorium ×cordigerum (Fernald) Fernald – Ar, FNA21, K3, K4; = Eupatorium rotundifolium L. var. cordigerum Fernald – C, K1, SE1, Cronquist (1985); < Eupatorium pubescens Muhl. ex Willd. – S; < Eupatorium rotundifolium L. – GW2; < Eupatorium rotundifolium L. ssp. ovatum (Bigelow) Montgom. & Fairbrothers – Montgomery & Fairbrothers (1970); < Eupatorium rotundifolium L. var. ovatum (Bigelow) Torr. – G, RAB; < Eupatorium scabridum Elliott – Tn
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