This section is from the book "Handbook Of Hardy Trees, Shrubs, And Herbaceous Plants", by W. Botting Hemsley. Also available from Amazon: Handbook of hardy trees, shrubs, and herbaceous plants.
The Moonseed family affords few hardy species. They are chiefly climbing shrubs with alternate exstipulate leaves and dioecious small inconspicuous flowers. The most remarkable characteristic of most members of this group is the curved carpels in which the base and proper apex are brought almost close together. There are something like 300 species, chiefly found within the tropics.