Morphological variability in Epipactis purpurata s. stricto (Orchidaceae) - an analysis based on herbarium material and field observations

摘要

A wide range of phenotypic variability in the orchid Epipactis purpurata s. stricto was found based on analysis of herbarium material and field research. Twenty-three biometric features were analysed. New diagnostically important features of gynostemium as well as of petal and sepal sizes and colours were established. Thus E. purpurata s. stricto is redescribed, clarifying the taxonomic importance of several morphological features.