- PacNW Herbaria Records for Campylium halleri
- Search Arctos Database for Campylium halleri (Southeast only)
- Search Arctos Database for Campylium halleri (entire database)
- Encyclopedia of Life search for Campylium halleri
- iNaturalist Observations for Campylium halleri in Southeast Alaska
Southeastern Alaska Distribution: Previously known only from Yakobi Island (Persson, 1963).
Habitat: Known primarily from calcareous areas, on cliff walls, boulders, sinkholes, and other shaded sites. Rarely growing on the bark of Sitka spruce.
Comments: In southeastern Alaska commonly with sporophytes. This species is generally rare in North America, but it appears to be common in suitable sites within the southeastern Alaska portion of its range.