Over the period 1980–84 the author was engaged in a study of the flora of the Pinega State Nature Reserve, to the northeast of Arkhangel'sk. In so doing she identified 476 species of higher plants belonging to 220 genera and 66 families. In this article she attempts a bipartite analysis of this rich flora on the basis of geographical ranges of the component species. The first part is a “longitudinal”; classification, based on the range of a species in an east‐west direction, e.g., a subgroup of Eurasian and East American species. The second part is a “latitudinal”; classification, divided into two types, six subtypes, 10 groups and 17 subgroups of ranges, the major focus being on latitudinal distribution. The analysis reveals that primarily boreal species are dominant (340 species or 71.4% of the flora), while the overwhelming majority within this group have a boreal‐mid European distribution (285 species or 59.8% of the total flora).