Pycnanthemum virginianum (L.)Durand et B.D. Jackson
January 1,
Jug End Fen, Egremont
January 1,
Jug End Fen, Egremont Virginia mountain mint
Calyx more or less actinomorphic, its lobes triangular, 0.5-1.0
mm long, not tufted with septate hairs.