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

Michigan State University Herbarium non-lichenized fungi
Catalog #: MSC0258316
s.n.
Didymium squamulosum leucopus
, North America

USDA United States National Fungus Collections
Catalog #: BPI 958738
s.n.
Didymium squamulosum (Alb. & Schwein.) Fr.

Charles Gardner Shaw Mycological Herbarium, Washington State University
Catalog #: WSP23827
Ellis s.n.
Didymium squamulosum var. leucopus A. & S.

Chrysler Herbarium - Mycological Collection
Catalog #: CHRB-F-0005916
Ellis s.n.
Didymium squamulosum var. leucopus A. & S.

Miami University, Willard Sherman Turrell Herbarium
Catalog #: 000247512
G. A. Rex #1216
Didymium squamulosum var. leucopus (Link) Berl.
United States, Pennsylvania, Philadelphia

University of Michigan Herbarium
Catalog #: 333944
G. A. Rex #s. n.
Didymium squamulosum var. leucopus (Link) Berl.
USA, Pennsylvania, [No Specific locality included with specimen.]

Academy of Natural Sciences of Drexel University
Catalog #: PH00300104
G. A. Rex #s.n.
Didymium squamulosum var. leucopus A. & S.
United States, Pennsylvania, Philadelphia, Philadelphia (Fairmount Park?)

Academy of Natural Sciences of Drexel University
Catalog #: PH00314151
G. A. Rex #s.n.
Physarum leucopus Link
United States, Pennsylvania, Philadelphia, Philadelphia

University of Illinois Herbarium
Catalog #: ILL00098447
GA Rex s.n.
Didymium squamulosum var. leucopus (Link) Berlese
United States, Pennsylvania, Philadelphia, Philadelphia; Philadelphia

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0088073
GA Rex s.n.
Didymium squamulosum var. leucopus (Link) Berlese
United States, Pennsylvania, Philadelphia, Philadelphia

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00050844
J. B. Ellis s.n.
Didymium squamulosum var. leucopus (Link) Berlese
United States, New Jersey, Newfield;