Sexual polymorphism in Hamamelididae and Dilleniidae in Siberia. Review publications

In subclass Hamamelididae in Siberia all species are monoecious. In 26,2% (140 species and subspecies) flowering plants of subclass Dilleniidae in Siberia have 4 forms of sexual differentiations: monoecy, gynomonoecy, gynodioecy and dioecy. The most frequent form of a sexual expression in Dilleniidae is dioecy (94 species, 17,6%). From 19 families are richest with species with sexual differentiation Cannabaceae, Cucurbitaceae, Empetraceae, Euphorbiaceae, Salicaceae and Urticaceae. Sexual systems in Dilleniidae in Siberia are strongly associated with life forms, vegetative mobility, ecological groups and distribution in different vegetation types.