Platanthera dilatata (Pursh) Lindley ex Beck var. dilatata . Subgenus: Limnorchis. Phen: Jun. Hab: Bogs, marshes, wet meadows, circumneutral to rich fens. Dist: NS south to PA, west to Manitoba, south to n. IL; AK south to CA, east to CO; Iceland and Greenland.
Origin/Endemic status: Native
Taxonomy Comments: P. dilatata var. albiflora and P. dilatata var. leucostachys occur in w. and nw. North America and differ in spur length and shape.
Other Comments: The flowers have an intense spicy odor reminiscent of cloves.
Synonymy: = FNA26, K4, NE, NY, Pa; = Piperia dilatata (Pursh) Szlach. & Rutk. var. dilatata – K3; < Habenaria dilatata (Pursh) Hook. – C, F, G; < Platanthera dilatata (Pursh) Lindl. ex Beck – Il, Mi, Efimov (2016), Wettewa, Bailey, & Wallace (2020)