borealforest.org

 
BACK

Common Herb Species of the Northwest Forest

TREES

SHRUBS

GRAMINOIDS

FERNS & FERN-ALLIES

BROPHYTES & LICHENS

GLOSSARIES
Terminology | Pictorial

   
Cypripedium acaule
Pink Lady's Slipper
"Moccasin Flower"

Orchidaceae (Orchid Family)

Description

General - a perennial orchid emerging from thickened roots; displaying 2 basal leaves and a large, showy flower on an erect stalk, growing 20 - 30 cm tall.

Pink Lady's Slipper Leaves - simple; 2 basal leaves at stem base, large (10 - 20 cm long), almost opposite; elliptic, tapering to a pointed tip, sparsely hairy, with conspicuous parallel veins.

Flowers - solitary; pink (sometimes white) with reddish veins to greenish-brown; lip large, inflated into showy pounch, cleft on the upper side; single green bract arching forward from the stalk over the flower;appearing early summer.

Fruit -ascending brown capsules under the floral bract with thousands of tiny seeds; developing thoughout midsummer.

Habitat

Infrequent but adaptable; in bogs, open woods, sand dunes; in dry/fresh, jackpine and black spruce forests on sandy and coarse loamy soils.

Notes

Similar species are Cypripedium calceolus Yellow Lady's Slipper and Cypripedium reginae Showy Lady's Slipper, with white and pink flowers.

Return to Top of Page



Home | Forest Capital of Canada | About Our Website |
Ontario's North (West) Forest | Boreal Forests of the World | North (West) Forest Industry |
World Links and Resources | "Forest Finder" Search Engine | Educational Resources |
What's Happening | Contacts | Site Map |