ONTOMORPHOGENESIS OF <i>SALIX AURITA L.</i> WITHIN THE NIZHNI NOVGOROD REGION
<i>Salix aurita L.</i> has two life-forms of geoxilic shrubs and a monocormic tree due to polyvariance of its evolution in the course of ontomorphogenesis. These forms occur under various vegetation conditions. Ontogenesis of plants of various life forms is described. Four ontogenesis periods are identified. A description of ontogenetic states is given. Biomorphological indicators are presented for each age state.