⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-376804, with some changes.

Platanthera hyperborea subsp. graminea Rchb.f. is a synonym of Piperia dilatata var. albiflora (Cham.) Szlach. & Rutk.

This name is a synonym of Piperia dilatata var. albiflora (Cham.) Szlach. & Rutk..

The record derives from WCSP which reports it as a synonym (record 376804) with original publication details: Icon. Fl. Germ. Helv. 13-14: 126 1851.