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Cypripedium reginae (Showy lady's slipper) | NPIN

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Cypripedium reginae (Showy lady's slipper)
McAdoo, David R.

Cypripedium reginae

Cypripedium reginae Walter

Showy lady's slipper

Orchidaceae (Orchid Family)


USDA Symbol: CYRE6

USDA Native Status: L48 (N), CAN (N)

A stout, hairy, often twisted, leafy stalk bearing 1-3 large flowers with a white and pink, pouch-like lip petal.

This plant, the tallest and most beautiful of our northern native orchids, is especially common in the Great Lakes region. It has been overpicked and should be protected from further exploitation. Small White Ladys Slipper (C. candidum), a smaller plant, has a little flower with a white lip petal; it occurs in limestone soil and boggy places from Saskatchewan east to Ontario and New York, south to Virginia and Alabama, west to Missouri, and north to Nebraska and the Dakotas.


Plant Characteristics

Duration: Perennial
Habit: Herb
Leaf Complexity: Simple

Bloom Information

Bloom Color: White , Pink
Bloom Time: May , Jun , Jul , Aug


USA: AL , AR , CT , GA , IA , IL , IN , KY , MA , MD , ME , MI , MN , MO , NC , ND , NH , NJ , NY , OH , PA , TN , VA , VT , WI , WV
Canada: NB , NL , NS , ON , PE , SK
Native Distribution: Saskatchewan east to Newfoundland, south to North Carolina, west to Arkansas, and north to Minnesota and North Dakota.
Native Habitat: Swamps and moist woods, especially limestone sites.

Growing Conditions

Soil Moisture: Moist


Warning: The glandular hairs of the foliage may cause a rash similar to that caused by Poison Ivy (Toxicodendron radicans). POISONOUS PARTS: Glandular, irritating hairs on leaves. Symptoms include skin irritation after contact. Toxic Principle: Unidentified.
Conspicuous Flowers: yes

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Mt. Cuba Center - Hockessin, DE

Recommended Species Lists

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Additional resources

USDA: Find Cypripedium reginae in USDA Plants
FNA: Find Cypripedium reginae in the Flora of North America (if available)
Google: Search Google for Cypripedium reginae


Record Modified: 2012-11-11
Research By: TWC Staff

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