Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Tall Ironweed at Vascular Plants of North Carolina.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
Tall Ironweed, Common Ironweed, Giant Ironweed
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Mike Strickland mst071605_vgigantea
To 7' tall, with lanceolate, toothed leaves that are downy below, per Gardening with the Native Plants of Tennessee.
Mike Strickland mst081504a_vgigantea
Bracts overlapping, appressed, purplish, apex rounded to a short tip, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
Mike Strickland mst091403_vgigantea
13-30 flwrs per head (vs. 30-55 in V. noveboracensis), in terminal corymbs, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
Mike Strickland mst110407_vgigantea
Nutlets 3-4mm long; pappus tawny to purple, per Vascular Flora of the Carolinas.