Drummond, Musci Amer.
Thomas Drummond

Academy of Natural Sciences of Drexel University
Catalog #: PH00111493
T. Drummond #s.n.
Heterocladium heteropteroides Best
Canada, Collected chiefly in the ROCKY MTS., British North America

Academy of Natural Sciences of Drexel University
Catalog #: PH00114965
Thomas Drummond #s.n.
Leskea williamsii var. filamentosa Best
Canada, Collected chiefly in the ROCKY MTS., British North America