Abstract
Multivariate analysis tools are exploited on a data set composed of quantitative characteristics collected on 35 populations of plants of theDactylorhiza maculata (L.)Soó group from Western-Europe. These samples lead to four well-defined clusters; this, together with qualitative, cytological and ecological arguments, allows for the recognition of four specific entities:D. maculata s.str.,D. fuchsii (Druce)Soó,D. saccifera (Brongn.)Soó andD. caramulensis (Vermeulen)Tyteca. It is concluded that the floral characters play an essential role in the taxonomical distinction. It also appears that the set of characters measured, as well as the methods exploited, are especially well-suited and valuable tools for the morphological study of the genusDactylorhiza.
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Dufrêne, M., Gathoye, JL. & Tyteca, D. Biostatistical studies on western EuropeanDactylorhiza (Orchidaceae)—theD. maculata group. Pl Syst Evol 175, 55–72 (1991). https://doi.org/10.1007/BF00942145
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DOI: https://doi.org/10.1007/BF00942145