⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-35153467, with some changes.

Calliergon richardsonii var. pungens Bryhn is a synonym of Calliergon megalophyllum Mikut.

This name is a synonym of Calliergon megalophyllum Mikut..

The record derives from Tropicos which reports it as a synonym (record 35153467) with original publication details: Musci Eur. Exsic. 13: n. 638 n 1910.