Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Sumpweed at Vascular Plants of North Carolina.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
Sumpweed, Rough Marsh-elder, Annual Marsh-elder
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Eva Pratt esp092212_photo_22
Leaves opposite, ovate, coarsely serrate, pubescent on both surfaces, per Vascular Flora of the Carolinas.
Richard and Teresa Ware rtw_iva_annua_4
Racemes 3-16cm long. Heads pendant, each head subtended by a foliaceous bract, per Vascular Flora of the Carolinas.