Northern small yellow lady’s slipper (Cypripedium parviflorum var. parviflorum), also called lesser yellow lady’s slipper, inhabits wet areas. It is found in the northeastern Minnesota in rich conifer swamps on moss-covered peat. In the lower Minnesota River valley it is found in calcareous fens. In northwestern Minnesota it is found in wet prairies, wet meadows, and wet aspen woodlands. It is also found in hardwood swamps, upland hardwood forests, and roadside ditches. The large showy flowers appear from May 20 to June 30, with peak blooming time June 5 to June 15.
Do not touch. The hairs on the stems and leaves cause dermatitis in some people.