⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-343559, with some changes.

Ampliglossum williamsii (Schltr.) Campacci is a synonym of Oncidium williamsii Schltr.

This name is a synonym of Oncidium williamsii Schltr..

The record derives from WCSP which reports it as a synonym (record 343559) with original publication details: Colet. Orquídeas Brasil. 3: 86 2006.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:77071998-1.