Birch (Betula pendula Roth. (= Betula verrucosa Ehrh.) forests of the forest-steppe zone of West Siberia, with admixture of asps (Populua tremula), when the leaves have just started to become yellow.

The valley of Shadrikha Rivulet, the surroundings of Akademgorodok (Academy Town), Novosibirsk, West Siberia, Russia. September 1995. O. Kosterin.