⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-26614500, with some changes.

Elaphoglossum williamsii Vareschi is a synonym of Elaphoglossum nigrescens (Hook.) T. Moore ex Diels

This name is a synonym of Elaphoglossum nigrescens (Hook.) T. Moore ex Diels.

The record derives from Tropicos which reports it as a synonym (record 26614500) with original publication details: Acta Bot. Venez. 1: 108, f. 11B 108 1966.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:89379-2.