Dig deeper at SERNEC, a consortium of southeastern herbaria.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Gentianales
Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
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Richard and Teresa Ware rtw_h_canadensis_3
Flowers similar to H. purpurea, per Wildflowers of the Eastern United States.
Richard and Teresa Ware rtw_h_canadensis_c
Our only Houstonia with basal leaves ciliate and present at flowering, per Wildflowers of the Eastern United States.