Ellis, N. Amer. Fungi
J.B. Ellis [1 - 1500, plus extras]

Michigan State University Herbarium non-lichenized fungi
Catalog #: MSC0258345
s.n.
Chondrioderma difforme (Persoon) Rostafinsky
, North America

USDA United States National Fungus Collections
Catalog #: BPI 958739
s.n.
Chondrioderma difforme (Pers.) Rostaf.

Chrysler Herbarium - Mycological Collection
Catalog #: CHRB-F-0002927
. s.n.
Chondrioderma difforme (Persoon) Rostafinsky

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00047003
Ellis s.n.
Chondrioderma difforme (Persoon) Rostafinsky
United States, New Jersey, Newfield;

Miami University, Willard Sherman Turrell Herbarium
Catalog #: 000247514
G. A. Rex #1217
Diderma reticulatum (Rostaf.) Morgan
United States, Pennsylvania, Philadelphia

University of Michigan Herbarium
Catalog #: 333897
G. A. Rex #s. n.
Didymium difforme (Pers.) Gray
USA, Pennsylvania, [No Specific locality included with specimen.]

Academy of Natural Sciences of Drexel University
Catalog #: PH00300054
G. A. Rex #s.n.
Didymium difforme (Pers.) Gray
United States, Pennsylvania, Philadelphia, Philadelphia

Academy of Natural Sciences of Drexel University
Catalog #: PH00313973
G. A. Rex #s.n.
Didymium difforme (Pers.) Gray
United States, Pennsylvania, Philadelphia, Philadelphia

University of Illinois Herbarium
Catalog #: ILL00098448
GA Rex s.n.
Chondrioderma difforme (Persoon) Rostafinsky
United States, Pennsylvania, Philadelphia, Philadelphia; Philadelphia

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0088074
GA Rex s.n.
Chondrioderma difforme (Persoon) Rostafinsky
United States, Pennsylvania, Philadelphia, Philadelphia