Cypripedium pubescens
Cypripedium pubescens
Cypripedium pubescens Willd.
Engl.: greater yellow lady's slipper, American valerian, ladies'-slipper, large yellow lady's slipper, nerve-root, Noah's ark, yellow ladies'-slipper, yellow moccasin-flower.
Bot. syn.: Cypripedium parviflorum Salisb. var. pubescens (Willd.) O. W. Knight.
