Here's another member of the family of Rubiaceae. In Perigord the Wild Madder (Rubia peregrine) grows nearly everywhere where there are trees and bushes. Here it found a fence to carelessly drape its garlands around.
The verticillate leaves stay on in winter and disappear only in spring. Some black berries of last year have not yet been eaten by birds. No, it is not what you call a tidy plant!