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

University of Michigan Herbarium
Catalog #: 84455
C. C. Plitt #s. n. 01 July 1911
Cladonia dimorphoclada Robbins
United States, Maryland, Baltimore, [no data]

University of Vermont, Pringle Herbarium, North American lichens
Catalog #: UVMVT015457
C. C. Plitt #s.n. 01 July 1911
Cladonia uncialis (L.) F. H. Wigg.
United States of America, Maryland, Baltimore

West Virginia University Herbarium
Catalog #: WVA-L-0009855
C. C. Plitt #s.n. 01 July 1911
Cladonia uncialis (L.) F. H. Wigg.
United States, Maryland, Baltimore

University of Florida Herbarium
Catalog #: FLAS L7011
C.C. Plitt s.n. 01 July 1911
Cladonia caroliniana Tuck.
United States, Maryland, Baltimore, [n/a]

University of Colorado, Museum of Natural History Herbarium Lichen Collection
Catalog #: COLO-L-0013687
C.C. Plitt #L 79011 01 July 1911
Cladonia uncialis (L.) F. H. Wigg.
United States, Maryland, Baltimore

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00028584
C.C. Plitt #s.n. 01 July 1911
Cladonia uncialis (L.) F. H. Wigg.
USA, Maryland, Baltimore

Duke University Herbarium Lichen Collection
Catalog #: 0221482
Plitt, C. C. #s.n. 01 July 1911
Cladonia Hill ex P. Browne
United States, Maryland, Baltimore, Baltimore County, unspecified