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McAdoo, David R.
Cypripedium reginae Walter
Showy lady's slipper
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.
Bloom InformationBloom Color: White , Pink
Bloom Time: May , Jun , Jul , Aug
, WV Canada: NB
, 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 ConditionsSoil Moisture: Moist
BenefitWarning: 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
National Wetland Indicator Status
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Mt. Cuba Center
- Hockessin, DE
Record Last Modified: 2012-11-11
Research By: TWC Staff