Cypripedium parviflorum var. parviflorum 

Notes: Distribution: NC. & E. U.S.A.

General Description

A terrestrial herb with a short stout rhizome and fibrous roots, often forming large clumps. Erect stems typically slender, sparsely pubescent, 15-35 cm tall, leafy above covered by three sheaths below. Leaves three or four (rarely five), strongly two-ranked, suberect, commonly conduplicate, sheathing at base, lanceolate or ovate-lanceolate, acute or acuminate, 5-15 cm long, 2-8 cm wide, bluish green, pubescent on veins above and below, ciliate. Inflorescence one- or two-flowered; rhachis slender, glandular hairy; bracts leaf-like, lanceolate, acuminate, 3-8 cm long, 1-3 cm wide, pubescent and ciliate... Flowers small, showy, fragrant, the sepals and petals madder purple to maroon, glossy, the lip yellow with red spotting inside, the staminade yellow with red spotting; pedicel and ovary subsessile 1.5 cm long. Dorsal sepal suberect, lanceolateovate, acuminate, 2-4 cm long, 1.5-2.5 cm wide, undulate. Synsepal similar, slightly incurved, bifid at the apex, 2-4 cm long. Petals spirally twisted two to four times, linear-tapering, acute, 3-5 cm long, 0.5-0.8 cm wide, pubescent within in basal half. Lip porrect, obovoid to ellipsoidal, with a small mouth, 1.5-2.8 cm long, 1.2-2 cm wide, the apical margins incurved, the incurved sides with a basal pleat. Column short, 0.6 cm long; staminode subsessile, trullate, blunt, concave in apical half, 0.8-1 cm long, 0.5-0.6 cm wide; filaments extend beyond anthers, blunt to acute.


In sunny places in damp calcareous fens, non-sphagnous bogs, marshes and meadows with Mertensia and skunk cabbage, in wet prairies where sedge, shrubby cinquefoil, poison sumac and red osier dogwood abound, in marly cedar swamps and in deciduous woodland, favouring drier, often more acidic sites than var. pubescens.


Canada (British Colombia across Ontario, Quebec and Newfoundland), U.S.A. (New England and southern midwestern States: Maine south to North Carolina and Tennessee and across to Great Lakes and Eastern Rockies).

Distribution Map

  • Native distribution
Found in
  • Northern America North-Central U.S.A. Illinois
  • Kansas
  • Missouri
  • Nebraska
  • Oklahoma
  • Northeastern U.S.A. Connecticut
  • Masachusettes
  • New Jersey
  • New York
  • Ohio
  • Rhode I.
  • Southeastern U.S.A. Alabama
  • Arkansas
  • Delaware
  • Georgia
  • Maryland
  • North Carolina
  • Tennessee
  • Virginia


  • 1 Govaerts, R. (2003). World Checklist of Monocotyledons Database in ACCESS: 1-71827. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • 2 Original description of Cypripedium parviflorum var. parviflorum.
  • 3 Cribb, P.J. The Genus Cypripedium. 301 (Royal Botanic Gardens, Kew and Timber Press: 1997).

 Information From

  • A All Rights Reserved
eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from
  • B Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
World Checklist of Selected Plant Families
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; Retrieved 2011 onwards
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