FLAT-NEEDLE FIR-TREES OF THE NORTHERN PACIFIC: GEOGRAPHY, MORPHOLOGY, EVOLUTION, ECOLOGY
Geography, morphology, evolution and some peculiarities of ecology of fir-trees in Casicta Mayr section, or flat-needle fir-trees diffused in Northern Pacific from Alaska and Kamchatka to Japan, Korea and reduced in modern processings to 2-3 species because hybridization generated "transitions" among Far East fir-trees are considered in the article.