A.B. Seymour and F.S. Earle [1-550, plus extras]
USDA United States National Fungus Collections
s.n.
Ustilago residua G.P. Clinton
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University of California Berkeley, University Herbarium
T. A. Williams #s.n. 20 August 1898
Ustilago residua G.P. Clinton
USA, Wyoming, Big Horn Mountains
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