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

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00054507
Dr. W. G. Farlow s.n.
Gymnosporangium clavipes var. foliicola
United States, Massachusetts

Michigan State University Herbarium non-lichenized fungi
Catalog #: MSC0254342
W. G. Farlow s.n.
Gymnosporangium clavipes Cooke & Peck
United States, Massachusetts

Miami University, Willard Sherman Turrell Herbarium
Catalog #: 000227692
W. G. Farlow #1083b
Gymnosporangium nidus-avis Thaxt.
United States, Massachusetts

Purdue University, Arthur Fungarium
Catalog #: PUR042155
WG Farlow s.n.
Gymnosporangium nidus-avis Thaxt.
United States, Massachusetts

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0087840
WG Farlow s.n.
Gymnosporangium nidus-avis Thaxt.
United States, Massachusetts