⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-157372, with some changes.

Platanthera sigmoidea Maek. is a synonym of Platanthera chlorantha (Custer) Rchb.

This name is a synonym of Platanthera chlorantha (Custer) Rchb..

The record derives from WCSP which reports it as a synonym (record 157372) with original publication details: J. Jap. Bot. 11: 379 1935.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:651899-1.