Drummond, Musci Amer.
Thomas Drummond

Academy of Natural Sciences of Drexel University
Catalog #: PH00110796
T. Drummond #s.n.
Gymnostomum heimii Hedw.
Canada, Rocky Mts.

Field Museum of Natural History
Catalog #: C1057471F
36e29217-83d0-46dc-9f47-d73b2ad72f79
Thomas Drummond #s.n.
Hennediella heimii
Canada, Manitoba, Bank of the river below York Factory, Hudson's Bay.