DRESSLER'S CYPRIPEDIOIDEAE THUMBNAIL GALLERY.
The following is a list of the genera in the subfamily Cypripedioideae, with links to the genus description in the Orchidopaedia. This is the group characterised by a pouch- or slipper-shaped labellum, which also lends the group it's common name of Slipper Orchid. It is able to be distinguished from 'typical' orchids by the presence of two anthers on either side of the column. They are mostly terrestrial or lithophytic, and typically have no well developed storage organs (pseudobulbs or the like).
Cypripedium, Mexipedium, Paphiopedilum, Phragmipedium, and Selenipedium.