Cypripedium
lady's-slipper
4 species
2 subspecies and varieties
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Cypripedium ×columbianumColumbia lady's-slipper, hybrid lady's-slipper
Origin: Native
Cypripedium fasciculatumclustered lady's-slipper
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Santa Cruz County, California, east to Montana and Colorado.
Habitat: Moist to rather dry and rocky, open coniferous forests.
Origin: Native
Flowers: April-July
Growth Duration: perennial
Cypripedium montanummountain lady's-slipper
Distribution: Occurring east of the Cascades crest in Washington; Alaska south to California, east to Montana and Wyoming.
Habitat: Dry to moist open woods, low to mid-elevations in the mountains.
Origin: Native
Flowers: May-July
Growth Duration: perennial
Cypripedium parviflorumyellow lady's-slipper
Distribution: Occurring east of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains; throughout most of Canada and the central, southeastern, and northeastern regions of the U.S.
Habitat: Fens, wetlands, shorelines, and damp woodlands, often where calcareous.
Origin: Native
Flowers: May-June
Growth Duration: perennial
var. makasin – mocassin yellow lady's-slipper
var. pubescens – hairy yellow lady's-slipper