Dig deeper at SERNEC, a consortium of southeastern herbaria.
Smooth Cat's-ear has glabrous or glabrate basal rosette leaves (vs. hispid-hairy basal leaves in the quite common H. radicata). Read more at Vascular Plants of North Carolina.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
Manual of the Southeastern Flora (Small, 1933)
No pictures are available at this time.