Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about American Bluehearts at Vascular Plants of North Carolina.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Lamiales
American Bluehearts, Prairie Bluehearts, Plains Bluehearts
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Richard and Teresa Ware rtw_buchnera_americana
Flower tubes longer than 3/8" (whereas those of B. floridana usually less), per Atlantic Coastal Plain Wildflowers.
Richard and Teresa Ware rtw_buchnera_americana_1
Corolla lobes longer 5-8mm long (vs. those of B. floridana less than 5mm), per Vascular Flora of the Carolinas.