Morphological features of the leaves in clematises as a reflection of their ecological peculiarities

Quantitative morpho-anatomical features of leaves nine Clematis taxa (C. alpina ‘Pamela Jackman’, C. macropetala ‘Maidwell Hall’, integrifolia ‘Aljonushka’, ispahanica ‘Zvezdograd’, fargesii ‘Paul Farges’, texensis ‘Princess Diana’, tibetana, viticella, and heracleifolia) were determined with the aim to analyze their adaptation environmental conditions.Among investigated clematises, there plants hypostomatic heracleifolia, Jackman’), amphistomatic ‘Zvezdograd’ tibetana). In ‘Aljonushka’ hypostomatic, but few solitary stomata also present on adaxial surface. taxa, palisade coefficient ranged from 27.3% Jackman’) 49.9% The differed significantly in size. particular, almost ten times smaller than such heracleifolia.As a result UPGMA clustering, that can survive severe windy weather open rocky areas, tibetana joined separate cluster. second cluster combined Jackman’ Hall’ – cultivars blooming spring, during period significant difference daily temperatures. A relatively small leaf area these two clusters may indicate an by reducing transpiration general windage. third united rest mostly mesophytic large area. However, due similar structure leaf, comprised smallest leaves.