| yellow lady's slipper | (n) maroon to purple-brown orchid with yellow lip; Europe, North America and Japan, Syn. yellow lady-slipper, Cypripedium parviflorum, Cypripedium calceolus |
| large yellow lady's slipper | (n) plant of eastern and central North America having slightly fragrant purple-marked greenish-yellow flowers, Syn. Cypripedium calceolus pubescens |