Academy of Natural Sciences of Drexel University

Arizona State University Lichen Herbarium

Bell Museum of Natural History, lichen section, Univ. of Minnesota

Boise State University Lichen Herbarium

Botanical Research Institute of Texas

Brigham Young University

Butler University, Friesner Herbarium

California Academy of Sciences

Canadian Museum of Nature

Cornell University Plant Pathology Herbarium

Cryptogamic Herbarium, Michigan Technological University

Duke University Herbarium Lichen Collection

Fairchild Tropical Botanic Garden Herbarium

Farlow Herbarium of Cryptogamic Botany, Harvard University

Field Museum of Natural History

George Safford Torrey Herbarium

Harry D. Thiers Herbarium at San Francisco State University

Herbarium of the University of West Alabama

Idaho Museum of Natural History

Illinois Natural History Survey

Indiana University Herbarium

Intermountain Herbarium Lichen Collection (Utah State University)

Lichen Collection of the North Dakota State University Herbarium

Lichen Herbarium of the Patuxent Research Refuge - Maryland

Massey Herbarium (Virginia Tech)

Michigan State University

Montana State University Herbarium

Morehead State University

Morton Arboretum

New York Botanical Garden

Ohio State University Herbarium

Oregon State University Herbarium

Pacific Northwest Herbarium, Western Washington University

Robert F. Hoover Herbarium, Cal Poly State University

Robert W. Freckmann Herbarium at the University of Wisconsin, Stevens Point

Rutgers University, Chrysler Herbarium - Lichen Collection

Shirley C. Tucker Herbarium at Louisiana State University

The Freeman Herbarium at Auburn University

Towson University Biodiversity Center

United States National Herbarium - Smithsonian

University Herbarium, University of California, Berkeley

University of Alaska Museum of the North Herbarium

University of California Santa Barbara Lichen Collection

University of Central Florida Herbarium

University of Central Oklahoma Lichen Herbarium

University of Cincinnati, Margaret H. Fulford Herbarium

University of Colorado, Museum of Natural History Herbarium Lichen Collection

University of Florida Herbarium

University of Georgia, Julian H. Miller Mycological Herbarium

University of Hawaii, Joseph F. Rock Herbarium

University of Idaho

University of Illinois Herbarium

University of Michigan Herbarium

University of Nebraska Kearney

University of Nebraska State Museum, C.E. Bessey Herbarium

University of New Hampshire

University of North Alabama

University of North Carolina at Chapel Hill Herbarium

University of Richmond Herbarium

University of South Carolina, A. C. Moore Herbarium

University of South Florida Herbarium

University of Tennessee Lichen Herbarium

University of Vermont, Pringle Herbarium, North American lichens

University of Washington Herbarium

University of Wisconsin - Eau Claire

University of Wisconsin - Madison

University of Wyoming Rocky Mountain Herbarium

Utah Valley University Herbarium

Wesley E. Niles Herbarium, University of Nevada, Las Vegas

West Virginia University Herbarium

Willard Sherman Turrell Herbarium, Miami University

Yale University Herbarium, Peabody Museum of Natural History

Natural History Museum, University of Oslo

Uppsala University Exsiccati

Indian Lichen Database

Private Herbarium of T. L. Esslinger Herbarium

General Observation and Personal Collections