The lip of the flower is large and inflated, similar to Cyp. The entrance to the pouch, which for the Cypripedium species is usually through or around the staminode area, is closed in this species. A circular opening on the forepart of the lip is provided instead. The sepals and petals are similar, being oblong-lanceolate, although the sepals are slightly broader. The diameter of the flower reaches three and a half inches or so.
All segments are white.
An overlay of purple pin dots radiates from the center of the flower, and is generally focused on the central part of the flower. The interior of the lip and around the opening into the pouch are striped with the same coloration. The rhizome is one of the longest of the Cypripedium species, often six inches between growths. Thus, the container in which they are grown must be fairly large. Eight-inch azalea pots have been recommended1 and plastic dishpans are known to have been used.