Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Savanna Obedient-plant at Vascular Plants of North Carolina.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Lamiales
Savanna Obedient-plant, Eastern False Dragonhead
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Richard and Teresa Ware rtw_p_purpurea_2_c
Erect, square-stemmed perennial more than 3' tall w showy 1" long corollas, per Atlantic Coastal Plain Wildflowers.
Richard and Teresa Ware rtw_p_purpurea_cropped
The stem tends to hold its position if bent, hence its "obedience", per Atlantic Coastal Plain Wildflowers.