Drummond, Musci Amer.Thomas Drummond
Academy of Natural Sciences of Drexel University
T. Drummond #s.n.
Hypnum rugulosum F. Weber & D. Mohr
Canada, Collected chiefly in the ROCKY MTS., British North America
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University of Michigan Herbarium
[no data] #s. n.
Rhytidium rugosum (Ehrh. ex Hedw.) Kindb.
, Lake Superior, Beaver Lake
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