Cyripedum pubescens 

Large Yellow Ladies Slipper,

Cyripedum parviflorum

Lesser Yellow Ladies Slipper

Names and Myth

Cyripedum Venus’ slipper

 pubescens downy

parviflorum small-flowered

Natural history / Folklore

Leaves contain a poisonous substance similar to poison ivy.5 Roots of both species were gathered and used as a substitute for valerian.15 An infusion of the rootstock was used as a nerve tonic, a treatment for epilesely, hysteria, and alcoholic delirium tremens. 29,41

Species List Family Group
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May - June Flowers vary from golden-yellow to almost white. Open yellow pouch, lateral petals often twisted. Clasping leaves on flower stalk. Wooded slopes. Mature plants from clumps with multiple layers of flowers.