Drummond, Musci Amer.
Thomas Drummond

University of Tennessee Bryophyte Herbarium
Catalog #: TENN-B-0003321
#138
Barbula convoluta Hedw.
Canada, in the country extending from Canada to the Rocky Mountains.

Field Museum of Natural History
Catalog #: C1066434F
7045eeb1-3345-49c2-a8b6-ea96d1478064
[collector unknown] #s.n.
Tortula convoluta (Hedw.) P. Gaertn., B. Mey. & Scherb.
Canada, Extending from Canada to the Rocky Mountains

University of Michigan Herbarium
Catalog #: 548364
[no data] #s. n.
Barbula convoluta Hedw.
, In country extending from Canada to the Rocky Mountains