Merrill, Lich. Exs. Ser. I [Rockland (Maine)]
George K. Merrill [1-275]
IndExs #309684157

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 - Lichens
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 - Lichens
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 Herbarium Lichen Collection
Catalog #: COLO-L-0028678
George K. Merrill #s.n. 15 February 1911
Opegrapha vulgata (Ach.) Ach.
United States, Florida, Volusia, Daytona

Duke University Herbarium Lichen Collection
Catalog #: 299953
24c4b133-5a60-479b-980f-88a36a9a5262
Merrill, G., K. #s.n. 15 February 1911
Opegrapha vulgata (Ach.) Ach.
United States, Florida, Volusia Co., Daytona