J.T.C. Vestergren [1-1800, plus extras]

USDA United States National Fungus Collections
Catalog #: BPI 1038248
s.n.
Mystrosporium piriforme Desm.

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00060637
H. & P. Sydow s.n. 28 July 1899
Mystrosporium piriforme v. multiseptatum
Germany, Germania: Thiessow, ins. Rugia

USDA United States National Fungus Collections
Catalog #: BPI 445576
Sydow H.; Sydow P. s.n. 28 July 1899
Mystrosporium pyriforme var. multiseptatum
Germany, Thiessow, Ruegen Island