Особенности внутри- и межпопуляционной изменчивости Filipendula ulmarias. L. в Уральском регионе

Abstract

To clarify the relationship of taxa Filipendula ulmaria s. L., its intra- and interpopulation variability in the Middle Urals and in the southern Transurals was investigated. Representatives of the three taxa are growing in the studied region: F. ulmaria s. str., F. denudata, F. stepposa. 31 samples from 23 coenopopulations were studied. It was established that coenopopulations of F. stepposa are significantly different from the coenopopulations of the other taxa of F. ulmaria s. L., both by the complex of morphological characters and by the separate signs. The obtained data testify in favor of allocating of F. stepposa as subspecies or species. It is shown that the differences between «pure» coenopopulations consisting only of the plants of F. ulmaria s. str., and the «mixed» coenopopulations consisting of the plants F. ulmaria s. str. and F. denudata, are comparable to interannual variability within individual coenopopulations. On the base of these results F. denudata should not be considered as a separate species or subspecies; it can be treated as form or variation.