Ellis & Everhart, N. Amer. Fungi. Ser. II
J.B. Ellis ; B.M. Everhart [1501-3600, plus extras]

USDA United States National Fungus Collections
Catalog #: BPI 959108
s.n.
Didymella megarrhizae Cooke & Harkn.
United States

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00050812
Dr. H. W. Harkness s.n.
Didymella megarrhizae Cooke & Harkn.
United States, California, San Francisco;

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00050813
Dr. H. W. Harkness s.n.
Didymella megarrhizae Cooke & Harkn.
United States, California, San Francisco;

Chrysler Herbarium - Mycological Collection
Catalog #: CHRB-F-0005886
Dr. H. W. Harkness s.n.
Didymella megarrhizae Cooke & Harkn.
United States, California, San Francisco, San Francisco;

Michigan State University Herbarium non-lichenized fungi
Catalog #: MSC0254944
Dr. H.W. Harkness s.n.
Didymella megarrhizae Cooke & Harkn.
United States, California, San Francisco;

Miami University, Willard Sherman Turrell Herbarium
Catalog #: 000228562
H. W. Harkness #1661
Didymella megarrhizae Cooke & Harkn.
United States, California, San Francisco

USDA United States National Fungus Collections
Catalog #: BPI 610995
Harkness H. W. s.n.
Didymella megarrhizae Cooke & Harkn.
United States, California, San Francisco

University of Illinois Herbarium
Catalog #: ILL00098939
HW Harkness s.n.
Didymella megarrhizae Cooke & Harkn.
United States, California, San Francisco, San Francisco; San Francisco

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0088462
HW Harkness s.n.
Didymella megarrhizae Cooke & Harkn.
United States, California, San Francisco, San Francisco