A.B. Seymour and F.S. Earle [1-550, plus extras]

USDA United States National Fungus Collections
Catalog #: BPI 1020308
s.n.
Uncinula flexuosa Peck
United States

USDA United States National Fungus Collections
Catalog #: BPI 1020309
s.n.
Uncinula flexuosa Peck
United States

USDA United States National Fungus Collections
Catalog #: BPI 1021015
s.n.
Sphacelotheca chrysopogonis G.P. Clinton
United States

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0055685
E. W. D. Holway #s.n. 05 October 1903
Sphacelotheca chrysopogonis G.P. Clinton
Mexico, Chapala;

Charles Gardner Shaw Mycological Herbarium, Washington State University
Catalog #: WSP12039
R. E. Blount s.n. 18 October 1889
Uncinula flexuosa Peck
United States, Massachusetts, Cambridge

Michigan State University Herbarium non-lichenized fungi
Catalog #: MSC0214300
R. E. Blount s.n. 18 October 1889
Uncinula flexuosa Peck
United States, Massachusetts, Cambridge;

University of Michigan Herbarium
Catalog #: 309591
R. E. Blount #s. n. 18 October 1889
Uncinula flexuosa Peck
USA, Massachusetts, Middlesex, Cambridge.

University of Michigan Herbarium
Catalog #: 309585
R. Thaxter #s. n. 00 August 1890
Uncinula flexuosa Peck
USA, Massachusetts, Middlesex, Lexington.