Field survey of 1996–2010 in northern and middle taiga of European Russia and application of the dominantfloristic approach to vegetation resulted in identification of 6 syntaxa of feathermoss Scots pine forests, including two associations with five subassociations and 5 variants. The associations are Myrtillo Pinetum (P.) in the middleboreal and Empetro Myrtillo P. in the northernboreal forest subzones, respectively. The first unit comprises 3 subassociations, namely vaccinietosum with lichens (on coarse sand, transitional to VaccinioP. and probably pyrogenic), calamagrostietosum arundinaceae with herb species (mainly southboreal, found also on loamy sand), and typicum (midboreal, on nutrientpoor sand). The 2 subassociations of the northernboreal unit are linnaetosum on silicate rock outcrops and typicum with 2 variants. The western one occurs throughout the Kola Peninsula, Karelia, and the Onega River region. The eastern variant with Equisetum sylvaticum is found in the Northern Dvina and Pechora River basins. It features the onset of paludification, especially on soils with higher content of fine earth.