Dig deeper at SERNEC, a consortium of southeastern herbaria.
The nominate variety albus is native in the Northeast, south in the VA mountains to only a few dozen miles north of the NC border. However, as it occurs on calcareous soils in VA, there is little suitable habitat in nearby NC. Read more at Vascular Plants of North Carolina.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Dipsacales
Manual of the Southeastern Flora (Small, 1933)