large yellow lady's-slipper
Etymology: Cypripedium: incorrect Latinization of ancient Greek words meaning "Venus's shoe"
Plants: erect, perennial, 8"-30" tall forb
Leaves: mostly surrounding the stem, oval
Flowers: 6-parted, pouch 1 1/8"- 2" long, yellow, often with purple veins; sepals usually twisted, green-yellow to purple-brown; inflorescence 1 or 2 flowers; blooms May-June
Habitat: dry to moderate moisture; woods, forests
Conservation Status: Native
Flora of North America: Flora of North America USDA Plants Database: Federal Distribution and detailed information including photos Illinois Wildflowers: Wonderful photographs; detailed descriptions; color and leaf arrangement key Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"