Rare kind of the willow (salix vinogradovii A.Scvorts.), growing in Nizhniy Novgorod oblast, requiring protection, its sites and vital forms

On the basis of materials of lead expeditions new sites of rare kind Salix vinogradovii A.Scvorts are specified within the limits of the south of Nizhniy Novgorod oblast. Biologo-morphological features and vital forms are described. The ecological conditions influencing becoming of various vital forms are specified.