Accepted By and Published In:
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Bryan, V. S. & L. E. Anderson. 1957. The Ephemeraceae in North America. Bryologist 60: 67–102.
Accepted By:
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Wijk, R. van der, W. D. Margadant & P. A. Florschütz. 1959--1969. Index Muscorum Vol. 1--5. Regnum Veg. 17, 26, 33, 48, 65:.
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