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Platanthera dilatata (Pursh) Lindley ex Beck var. dilatata . Subgenus: Limnorchis. Common name: White Northern Bog-orchid, Tall White Bog Orchid, Bog Candles. Phenology: Jun. Habitat: Bogs, marshes, wet meadows, circumneutral to rich fens. Distribution: 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 ⓘ: = AqW, Can, FNA26, K4, NE, NS, NY, Pa, POWO; = Piperia dilatata (Pursh) Szlach. & Rutk. var. dilatata; < Habenaria dilatata (Pursh) Hook. — C, F, G; < Platanthera dilatata (Pursh) Lindl. ex Beck — Il, Mi, Efimov (2016), Wettewa, Bailey, & Wallace (2020). Basionym: Orchis dilatata Pursh 1814

Links to other floras: = Platanthera dilatata var. dilatata - FNA26

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Wetland Indicator Status:

  • Great Plains: FACW (name change)
  • Midwest: FACW (name change)
  • Northcentral & Northeast: FACW (name change)

Heliophily ⓘ: 6

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image of plant© Alan Cressler: Platanthera dilatata, Seeps, Lehman Creek Drainage, Great Basin National Park, White Pine County, Nevada 1 by Alan Cressler source | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Scott Ward | Original Image ⭷
image of plant© Scott Ward | Original Image ⭷
image of plant© Alan Cressler: Platanthera dilatata, Baker Creek Valley, Great Basin National Park, White Pine County, Nevada 1 by Alan Cressler source | Original Image ⭷

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Horticultural Information

No horticultural data found for this taxon.