Cypripedium candidum Willd.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Orchidaceae
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Scientific Name
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Description
Species Description - Stem 1.5–4 dm, with a few sheathing scales below and 3–5 lvs; lf-blades lanceolate to narrowly elliptic, often overlapping at base, 8–15 cm, the uppermost smaller, erect, and subtending the solitary fl; sep and lateral pet lance-linear, greenish, often red-striped, 2–4 cm, the pet often closely twisted; lip white, veined with violet within, 1.5–2.5 cm; 2n=20. In calcareous soils of marly bogs, open swamps, and wet prairies; N.Y. and N.J. to O., N.D., Nebr., and Mo. May, June. A hybrid with no. 4 [Cypripedium calceolus L.] is C. ×andrewsii A. M. Fuller.
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Common Names
white lady-slipper