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

USDA United States National Fungus Collections
Catalog #: BPI 958634
s.n.
Dictydium umbilicatum Schrad.

Chrysler Herbarium - Mycological Collection
Catalog #: CHRB-F-0005856
Dr. Geo A. Rex s.n.
Dictydium umbilicatum Schrader
United States, Pennsylvania, Philadelphia;

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00050750
Dr. Geo. A. Rex s.n.
Dictydium umbilicatum Schrader
United States, Pennsylvania, Philadelphia, near Philadelphia

Michigan State University Herbarium non-lichenized fungi
Catalog #: MSC0258314
Dr. Geo. A. Rex s.n.
Dictydium umbilicatum Schrader
United States, Pennsylvania, near Philadelphia

Miami University, Willard Sherman Turrell Herbarium
Catalog #: 000227519
G. A. Rex #1122
Dictydium umbilicatum Schrad.
United States, Pennsylvania, Philadelphia

University of Michigan Herbarium
Catalog #: 331377
G. A. Rex #s. n.
Dictydium umbilicatum Schrad.
USA, Pennsylvania, Philadelphia, Philadelphia, near.

University of Michigan Herbarium
Catalog #: 331397
G. A. Rex #s. n.
Dictydium cancellatum (Batsch) T. Macbr.
USA, Pennsylvania, Philadelphia, Philadelphia, near.

Academy of Natural Sciences of Drexel University
Catalog #: PH00300089
G. A. Rex #s.n.
Cribraria cancellata var. cancellata (Batsch) Nann.-Bremek.
United States, Pennsylvania, Philadelphia, near Philadelphia

Academy of Natural Sciences of Drexel University
Catalog #: PH00314144
G. A. Rex #s.n.
Cribraria cancellata var. cancellata (Batsch) Nann.-Bremek.
United States, Pennsylvania, Philadelphia, Philadelphia

University of Illinois Herbarium
Catalog #: ILL00098347
GA Rex s.n.
Dictydium umbilicatum Schrader
United States, Pennsylvania, Philadelphia, Philadelphia; Philadelphia

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0087964
GA Rex s.n.
Dictydium umbilicatum Schrader
United States, Pennsylvania, Philadelphia, Philadelphia