⚠ Version 1 of The Plant List has been superseded.
This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Physcomitrium megalocarpum in version 1.1 of The Plant List.
This name is a synonym of Physcomitrium megalocarpum var. californicum .
The record derives from Tropicos which reports it as a synonym (record 35108979
) with original publication details: Eur. N. Amer. Bryin. 2: 334 334 1897.