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 960199
s.n.
Agaricus sordidus Schumach.
United States

USDA United States National Fungus Collections
Catalog #: BPI 773373
Dearness, J. s.n. 00 December 1890
Hebeloma sordidulum Sacc.
Canada, Ontario, London under spruce trees

University of Illinois Herbarium
Catalog #: ILL00099982
J Dearness s.n. 00 December 1890
Agaricus (Hebeloma) sordidulus
Canada, Ontario, London; London

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0089573
J Dearness s.n. 00 December 1890
Agaricus (Hebeloma) sordidulus
Canada, Ontario, London

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00055172
J. Dearness s.n. 00 December 1890
Hebeloma sordidulus
Canada, Ontario, London;

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00055173
J. Dearness s.n. 00 December 1890
Hebeloma sordidulus
Canada, Ontario, London;

Michigan State University Herbarium non-lichenized fungi
Catalog #: MSC0257099
J. Dearness s.n. 00 December 1890
Agaricus sordidulus Peck
Canada, London;

Miami University, Willard Sherman Turrell Herbarium
Catalog #: 000213698
J. Dearness #2725 00 December 1890
Hebeloma Peck
Canada

Miami University, Willard Sherman Turrell Herbarium
Catalog #: 000193922
J. Dearness #2725 00 December 1890
Agaricus sordidulus Peck
Canada

University of Michigan Herbarium
Catalog #: 197753
J. Dearness #s. n. 00 December 1890
Agaricus sordidulus Peck
Canada, Ontario, London.

University of Vermont, Pringle Herbarium, Macrofungi
Catalog #: UVMVT300324
J. Dearness #s.n. 00 December 1890
Agaricus sordidulus Peck
Canada, London;

Academy of Natural Sciences of Drexel University
Catalog #: PH00307406
J. Dearness #s.n. 00 December 1890
Agaricus sordidulus Peck
Canada, Ontario, London

Academy of Natural Sciences of Drexel University
Catalog #: PH00321764
J. Dearness #s.n. 00 December 1890
Agaricus sordidulus Peck
Canada, London;