Objects of study are located in the southern taiga subzone of the European North and presented by spruce stands of wood sorrel types of site conditions with mixed stands. Lying of test areas was carried out in young stands, middle-aged, maturing and mature forests on the territory of Griazovets district of Vologda Region. Nature of bark structure at breast height, type of branching on twigs growing up in the middle of the crowns was determined. Processing of tree descriptions was performed on all study objects where 4 types of spruce were recorded by the nature of the structure of bark. By type of branches presence of three forms of spruce were defined.