Cypripedium reginae

Cyp. reginae close-up
Scientific Classification

Scientific Classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Liliopsida
Order: Asparagales
Subfamily: Cypripedioideae
Tribe: Cypripedioideae
SubTribe: Cypripediinae
Genus: Cypripedium
Species: Cyp. reginae
Alliance: Cypripedium
Binomial name
Cypripedium reginae
Walter, Fl. Carol.: 222 1788

Cypripedium reginae is a Cypripedium species found from Central to Eastern North America


Plant blooms in early summer with one to three, rarely four, 3-5 cm flowers.


Found in calcareous swamps, bogs, and moist woods, ranging from Central Saskatchewan over to Newfoundland and Labrador in the north, and southward into Eastern USA.




Common names: The Showy Lady's Slipper


  1. Cypripedium' reginae f. albolabium Fernald & B.G.Schub., Rhodora 50: 230 (1948).
  2. Cypripedium' reginae f. album (Aiton) House, Bull. New York State Mus. Nat. Hist. 243-244: 37 (1923).
  3. Cypripedium' hirsutum f. album R.Hoffm., Proc. Boston Soc. Nat. Hist. 36: 246 (1922).
  4. Calceolus' reginae (Walter) Nieuwl., Amer. Midl. Naturalist 3: 117 (1913).
  5. Cypripedium' reginae var. album (Aiton) Rolfe, Orchid Rev. 19: 208 (1911).
  6. Cypripedium' canadense Michx., Fl. Bor.-Amer. 2: 261 (1803).
  7. Cypripedium' spectabile Salisb., Trans. Linn. Soc. London 1: 78 (1791).
  8. Cypripedium' album Aiton, Hort. Kew. 3: 303 (1789).

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