Cypripedium montanum
Cypripedium
mountain lady slipper
lady's-slipper, lady slipper
erect, often pubescent.
alternate, 4–6, 8–17 × 4–10 cm.
opposite or alternate; ovate to elliptic, typically with distinct pleating, with sheathing bases.
elongated, 1–3-flowered.
elongated or compressed racemes.
dorsal sepal lanceolate to ovate, 3–6 × 1–1.5 cm, green suffused with purple;
lateral sepals connate almost to tip, similar in color and shape to dorsal sepal;
petals linearlanceolate and twisted, 4–7 × 0.3–0.6 cm, purple;
lip 2–3 × 1.2–1.7 cm, white with purple spots inside.
lateral sepals united, with distinct inflated lip;
stamens 2.
Cypripedium montanum
Cypripedium
Mixed conifer forests, open shrubby woodlands, roadsides. Flowering Apr–Jul. 50–2200m. BW, Casc, Col, CR, ECas, Sisk, WV. CA, ID, WA; north to AK. Native.
North America, Eurasia. Approximately 50 species; 3 species treated in Flora.
Lady slippers are unique among Oregon orchids in that they have two functional stamens, instead of one. Some authorities have treated Cypripedium as a distinct family, Cypripediaceae, based on this morphological feature.
James Riser
James Riser
- Local floras:
BC, 
CA, 
OR, 
WA - Local Web sites: CalFlora, CalPhotos,
Flora NW, 
PNW Herbaria, Turner Photog. 
WildflowerSearch
iNaturalist (observations)
USDA Plants Database- LBJ Wildflower Center
- SEINet
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
