The strange back-ward-growing of  the leafs.
Might be good at climbing.

My plant is male, and this is it's flowers.

This member of the Dioscoreaceae family was described by Scheidweiler  in 1837. It's the only member of this family from Mexico, El Salvador and Panama. Prefers a well-drained soil, some water and moderate sun. The caudex forms out of the ground, and gets 50 cm in diameter. The few vines reaches six meters. It seems like the leaves grows back-wards. Both male and female flowers are greenish. It's possible to make cuttings.

The caudex must be kept in shade. It's dioecious, but I don't know what I got.

This is kind of a winter grower, but will do fine a summer as well.

In 2008, the old stem did not die, it just got a new stem next to it.
Later, the old stem got new side branches first, then the new. In autumn; a new main stem. Ended up covering the window entirely! Consuming ½ litre water every day, putting on some good growth to the caudex:

The big leaf, size as a hand.