H.W. Ravenel and M.C. Cooke [1-800, plu extras]

University of Nebraska State Museum, C.E. Bessey Herbarium
Catalog #: NEB00059819
H. W. Ravenel s.n.
Microsphaera penicillata (Wallr.) Lév.
United States, South Carolina, Aiken, Aiken;

Academy of Natural Sciences of Drexel University
Catalog #: PH00302528
H. W. Ravenel #s.n.
Microsphaera abbreviata Peck
United States, South Carolina, Aiken, Aiken

Cornell University, Plant Pathology Herbarium
Catalog #: Rav.,F.Amer.0626
S. Pitt s.n.
Microsphaera Lév.
United States