⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-35120264, with some changes.

Trematodon drepanellus var. flaccidisetus (Cardot) Dixon is a synonym of Trematodon longicollis Michx.

This name is a synonym of Trematodon longicollis Michx..

The record derives from Tropicos which reports it as a synonym (record 35120264) with original publication details: Hong Kong Naturalist, Suppl. 2: 2 2 1933.