Cypripedium calceolus L.
Yellow Lady's Slipper
Family - Orchidaceae
Stems - No info. yet.
Leaves - No info. yet.
Inflorescence - No info. yet.
Flowers - No info. yet.
Flowering - April - June.
Habitat - North and East-facing slopes of ravines, mesic, upland woods.
Origin - Native to U.S., Europe, and Asia.
Other info. - This showy and striking species can be found throughout Missouri. The plant is just one of a larger complex of plants which occur in Europe, Asia, and North America. At present, two varieties are recognized in Missouri. Variety parviflorum (Salisb.) Fernald has a corolla lip 2-3cm long, and 4-6 leaves per flowering stem. Variety pubescens (Willd.) Correll has a corolla lip 3-6cm long and 3-4 leaves per flowering stem. Both varieties are commonly scattered throughout the state.
A rare white form of var. parviflorum has been collected in Missouri in a couple of southern counties.
Photographs taken in Linville, NC., 4-30-03.