Cypripedium
Family: Orchidaceae
Cypripedium image
Paul Rothrock
  • FNA
  • Gleason & Cronquist
  • Resources
Charles J. Sheviak in Flora of North America (vol. 26)
Herbs, perennial. Roots closely to widely spaced along rhizome, slender, fleshy; rhizomes short to elongate. Stems leafy or scapose. Leaves alternate, in single radical pair, or subopposite near midpoint of stem, ascending to spreading, plicate, bases sheathing stem. Inflorescences terminal, solitary; flowers solitary or 2-several in lax racemose spike; bracts large, foliaceous. Flowers resupinate, showy; sepals distinct or lateral sepals usually connate proximal to lip forming synsepal; petals entire; lip inflated, slipper- or sac-shaped, with adaxial orifice; pollinaria absent; loose granular pollen in 2 lateral anthers, dorsal anther a large subapical staminode; stigma free, 2-3-lobed. Fruits capsules, ellipsoid to oblong-ellipsoid.
Vascular plants of NE US and adjacent Canada
Sep and lateral pet somewhat differentiated, widely spreading, the 2 lower sep usually connate; lip a large inflated pouch, its margins ±inrolled around the orifice; column declined over the orifice of the lip, bearing a fertile stamen (with granular, irregularly coherent pollen) on each side and dilated staminode above; perennial from fibrous roots, the erect stem bearing 2-several basal or cauline lvs and 1 or 2 large fls. 50, N. Temp.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
Species within inventory project: Intermountain Regional Herbarium Network
Cypripedium acaule
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Cypripedium andrewsii
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Cypripedium arietinum
Image of Cypripedium arietinum
Cypripedium californicum
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Cypripedium candidum
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Cypripedium cordigerum
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Cypripedium debile
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Cypripedium fasciculatum
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Cypripedium flavum
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Cypripedium guttatum
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Cypripedium irapeanum
Image of Cypripedium irapeanum
Cypripedium japonicum
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Cypripedium kentuckiense
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Cypripedium macranthos
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Cypripedium micranthum
Image of Cypripedium micranthum
Cypripedium molle
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Cypripedium montanum
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Cypripedium parviflorum
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Cypripedium passerinum
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Cypripedium reginae
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Cypripedium tibeticum
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Cypripedium veganum
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Cypripedium x alaskanum
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Cypripedium x columbianum
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Cypripedium x favillianum
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Cypripedium x herae
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Cypripedium x landonii
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Cypripedium yatabeanum
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Cypripedium × andrewsii
Image of Cypripedium × andrewsii