Page authors: Don Knoke, David Giblin
Cypripedium montanum
mountain lady's-slipper

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.



Accepted Name:
Cypripedium montanum Douglas ex Lindl.
Publication: Gen. Sp. Orchid. Pl. 528. 1840.

Synonyms & Misapplications:
(none provided)
Additional Resources:

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.

USDA Plants: Cypripedium montanum information.

98 photographs:
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