Distribution: Occurring east of the Cascades crest in Washington; Alaska to California, east to Montana and Wyoming.
Habitat: Dry to moist open woods, low to mid-elevations in the mountains.
Flowers: May-July
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Glandular-pubescent, perennial herbs, the stems 2-6 dm. tall, leafy throughout.
Leaves alternate, broadly elliptic to ovate-elliptic, 5-15 cm. long and up to 7 cm. broad, sessile and sheathing.
Flowers 1-3 near the tip of the stem, each subtended and usually exceeded by an erect leaf-like bract; sepals and petals light to deep brownish-purple, narrowly to broadly lanceolate, the upper sepal 4-5 cm. long, the lower pair shorter, fused nearly to the tip; 2 small petals spreading, up to 6.5 cm. long; the third petal (lip) pouch-like, obovoid, 2-3 cm. long, dull white, usually purplish-veined; fertile stamens 2, the third stamen sterile and petal-like, up to 10 mm. long, ovate, yellowish-white and purple-spotted.
Capsule.
PNW Herbaria: Specimen records of Cypripedium montanum in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Cypripedium montanum checklist entry
OregonFlora: Cypripedium montanum information
E-Flora BC: Cypripedium montanum atlas page
CalPhotos: Cypripedium montanum photos