- FNA page for Plagiomnium cuspidatum Plagiomnium cuspidatum, P. drummondii, and P. floridanum are the only North American species of the genus that consistently have well-developed, sharp teeth restricted to the distal portions of the leaf margins. Plagiomnium ellipticum and P. rostratum often have leaves that are toothed only distally, but the teeth are small and mostly blunt, and the leaves are never obovate.
- PacNW Herbaria Records for Plagiomnium cuspidatum
- Search Arctos Database for Plagiomnium cuspidatum (Southeast only)
- Search Arctos Database for Plagiomnium cuspidatum (entire database)
- Encyclopedia of Life search for Plagiomnium cuspidatum
- iNaturalist Observations for Plagiomnium cuspidatum in Southeast Alaska
Southeastern Alaska Distribution: Known only from the Chilkat Mountains (Kurtz, 1885).
Habitat: Mainly in shaded forest sites, on damp soil, stumps, rocks along streams.
Comments: Frequently with sporophytes.