Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Smooth Beardtongue at Vascular Plants of North Carolina.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Lamiales
Manual of the Southeastern Flora (Small, 1933)
Smooth Beardtongue, Eastern Beardtongue, Eastern Smooth Beardtongue
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Terry Holdsclaw tdh_p_laevigatus_0212
May Catawba County NC
Panicle narrow; the bracts reduced, not leaflike, per Vascular Flora of the Carolinas.
Richard and Teresa Ware rtw_p_laevigatus
Corolla purplish, unlined or feebly lined with purple on the rounded floor, per Vascular Flora of the Carolinas.
Richard and Teresa Ware rtw_p_laevigatus_13b
May be separated from P. australis or P. multiflorus by its dilated throat, per Atlantic Coastal Plain Wildflowers.