UW Burke Herbarium species comparison

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Platanthera stricta

canyon bog orchid, needle-spur green orchid, slender bog orchid
Habit Herbaceous perennials, 18-100 cm tall, erect to slightly decumbent, somewhat succulent; stems not angled; roots fasciculate, slender and tuberous, fleshy.
Leaves

Leaves few to several, abruptly spreading or occasionally ascending, dispersed along stem and becoming reduced to bracts towards inflorescence;

blades folded slightly lengthwise, oblong to ovate to linear-lanceolate, 3-32 mm long and 1-4.5 cm broad.
Flowers

Inflorescence sparsely- or densely-flowered spike;

flowers resupinate, light yellowish green to light green, not showy;

lateral sepals spreading to curving backward;

petals ovate-falcate to lance-falcate, margins entire;

labellum bent downward or extending forward, linear to lanceolate, basal thickening absent, 3-9 mm long and 1-3 mm broad or less;

spur distinctly club-shaped, capitate inflated or pouch-shaped, 2-6 mm, apex obtuse;

rostellum lobes parallel to convergent, directed downward, minute, rounded, not easily seen;

pollinaria 2, not curved;

pollinia 2, remaining within anther sacs;

viscidia free, orbiculate;

stigma entire;

ovary slender to stout, generally 5-10 mm.
Fruits

Capsules ellipsoid to cylindric.

Platanthera stricta
Flowering time June-August
Habitat Wet meadows, swamps and coniferous forests, low to mid-elevations.
Distribution
Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to Alberta, Montana, and Wyoming.
[WildflowerSearch map]
[BONAP county 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. transversa, P. unalascensis
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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