Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Dipsacales
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John M. Randall, The Nature Conservancy, Bugwood.org bug_5392301
Branches retrorsely hispid with reddish-brown hairs, per Weakley's Flora.