Anonymous, Pl. Exs. Grayan.
Anonymous [1 - 1500 or more]

University of North Carolina at Chapel Hill Herbarium: Vascular Plants
Catalog #: NCU00140474
Fernald, Merritt Lyndon #s.n. 13 September 1919
Pycnanthemum muticum var. attenuatum
United States, Massachusetts, Barnstable, near Half-Way Pond, Barnstable