Dig deeper at SERNEC, a consortium of southeastern herbaria.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Lamiales
Swamp Twinflower, Swamp Dyschoriste
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Richard and Teresa Ware rtw_d_humistrata_sharp
Corolla shorter than that of D. oblongifolia (< 12mm, per Wildflowers of the Eastern United States.