Vitis vinifera subsp. sylvestris

Description:

2013-02-02 Lower Austria, district Gnserndorf - Orth an der Donau, Danube National ParkGerman name: Wild-WeinrebeForesters are calling them "black vines", as opposed to "white vines" Clematis vitalba - and indeed both are easily distinguished (and at a distance!) by their bark, which is light-brownish on the latter but very dark on the former one. So in order to find them in alluvial forests you are good advised to try in winter, when vines and their bark stick out and aren't hidden behind a thick leaf cover.