- Cypripedium calceolus
- Cypripedium calceolus L.
- Cypripedium formosanum
- Cypripedium formosanum Hayata
- Cypripedium japonicum
- Cypripedium japonicum Thunb.
- Cypripedium kentuckiense
- Cypripedium kentuckiense C.F.Reed
- Cypripedium parviflorum
- Cypripedium parviflorum Salisb.
- Cypripedium parviflorum Salisb. var. pubescens (Willd.) O. W. Knight
- Cypripedium passerinum
- Cypripedium passerinum Richardson
- Cypripedium sp.
- Cypripedium unknown