Morphology and Variability of the Pollen of Spiraea L. (Rosaceae) Genus in Siberia and the Far East
T. A. Polyakova, G. N. Gataulina
Pages: 545–551
Abstract
Pollen of 12 species of the Spiraea L. genus growing in differetn regions of Siberia and the Far East is investigated. The ultrasculpture of pollen grains is described. On the basis of aperture morphology and exine sculpture, the main types of pollen grains are sorted, and the key indices for their determination are revealed. It is noted that the species of the Spiraria section are distinguished by the large size of grains. Substantial variations of the size of pollen grains was established for S. media and S. alpina species. The level of natural polymorphism of palynological indices is shown.
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