⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-26602034, with some changes.

Hymenophyllum protrusum Hook. is a synonym of Mecodium protrusum (Hook.) Copel.

This name is a synonym of Mecodium protrusum (Hook.) Copel..

The record derives from Tropicos which reports it as a synonym (record 26602034) with original publication details: Sp. Fil. 1: 104, t. 37-b 104 1844.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:125849-2.