⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-35153468, with some changes.

Calliergon richardsonii var. robustum (Lindb. & Arnell) G. Roth 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 35153468) with original publication details: Eur. Laubm. 2: 573 573 1904.