Merrill: Lich. Exs.
George K. Merrill [1 - 275]

University of Vermont, Pringle Herbarium, North American lichens
Catalog #: UVMVT019055
G. K. Merrill s.n. 15 February 1911
Opegrapha cinerea Chevall.
United States of America, Florida, Daytona;

University of Florida Herbarium
Catalog #: FLAS L8532
G.K. Merrill s.n. 15 February 1911
Opegrapha cinerea Chevall.
United States, Florida, Volusia, Daytona

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00032441
G.K. Merrill #s.n. 15 February 1911
Opegrapha vulgata (Ach.) Ach.
USA, Florida, Daytona;

Shirley C. Tucker Herbarium at Louisiana State University
Catalog #: LSU00144577
George K. Merrill #s.n. 15 February 1911
Opegrapha atra Pers.
United States, Florida, Volusia, Daytona; Daytona

University of Colorado, Museum of Natural History
Catalog #: COLO-L-0028678
George K. Merrill #s.n. 15 February 1911
Opegrapha vulgata (Ach.) Ach.
United States, Florida, Volusia, Daytona

Duke University Herbarium
Catalog #: 0299953
Merrill, G. K. #s.n. 15 February 1911
Opegrapha vulgata (Ach.) Ach.
United States, Florida, Volusia, Daytona