UW Burke Herbarium species comparison

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Platanthera psycodes

Platanthera dilatata

bog-candle, boreal bog-orchid, white orchid, white rein-orchid, scent-bottle
Habit Herbaceous perennial with single, densely flowered inflorescences up to 3 ft. tall.
Leaves

Simple, alternate, glabrous, lanceolate, tapering in width from base to tip.
Flowers

Sepals and petals white, sepals widely spreading, two of the petals upright and arching, forming hood-like appearance;

lip widest at base and often hanging downward, spurred at base.
Fruits

Capsules, brown at maturity and containing large numbers of tiny seeds.

Platanthera psycodes

Platanthera dilatata
Identification notes Flowers with a sweet, spicy fragrance; plants often growing together in fairly large numbers.
Flowering time June-September
Habitat Wet meadows, forest openings, and streambanks from low elevations to the subalpine.
Distribution
[WildflowerSearch map]
[BONAP county map]
Widely distributed on both sides of the Cascades crest through the mountainous and forested areas of Washington; Alaska to California, east to the Rocky Mountains; also from the Great Lakes region east to the Atlantic Coast.
[WildflowerSearch map]
Origin Native
Conservation status Not of concern
Sibling taxa
P. aquilonis, P. chorisiana, P. dilatata, P. elegans, P. elongata, P. ephemerantha, P. huronensis, P. obtusata, P. orbiculata, P. sparsiflora, P. stricta, P. transversa, P. unalascensis
P. aquilonis, P. chorisiana, P. elegans, P. elongata, P. ephemerantha, P. huronensis, P. obtusata, P. orbiculata, P. sparsiflora, P. stricta, P. transversa, P. unalascensis
Subordinate taxa
P. dilatata var. albiflora, P. dilatata var. dilatata, P. dilatata var. leucostachys
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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