Cypripedium parviflorum

Taxonomy

• C. parviflorum var. exiliens Sheviak – Alaska
• C. parviflorum var. makasin Sheviak – commonly called the "northern yellow lady's-slipper"; widely distributed over much of Canada and the northern United States
• C. parviflorum var. parviflorum – commonly called the "small yellow lady's-slipper"; southern part of the species range, from eastern Nebraska and eastern Oklahoma east to Virginia and New Hampshire
• C. parviflorum var. pubescens O. W. Knight – commonly called the "large yellow lady's-slipper"; very widespread across much of United States, Canada, and St. Pierre & Miquelon; treated by many authors as a distinct species, Cypripedium pubescens