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A Revision of the Taxonomy and Identification of Epipactis greuteri (Orchidaceae, Neottieae)

Department of Botany, Institute of Environmental Biology, University of Wrocław, 50-328 Wrocław, Poland
Department of Molecular Evolution, University of Gdańsk, 80-308 Gdańsk, Poland
Department of Forest and Natural Environment Sciences, International Hellenic University, 66100 Drama, Greece
Association P.P.V.N.C. Excelsior, 310465 Arad, Romania
Author to whom correspondence should be addressed.
Plants 2020, 9(6), 783;
Received: 18 May 2020 / Revised: 17 June 2020 / Accepted: 19 June 2020 / Published: 22 June 2020
(This article belongs to the Section Plant Systematics, Taxonomy, Nomenclature and Classification)
Epipactis greuteri is an obligate autogamous orchid species. Due to large differences in the interpretation of the diagnosis of this species, it is often mistakenly identified by botanists, which results in erroneous information provided in the literature about its distribution in Europe. In the present paper we review its description, including flower details, gynostemium features, and papillae morphology and compare it to E. helleborine, with which it is often confused. Based on thorough study of herbarium material (including holotype and isotype) and field research in Greece, Romania, and Poland, we confirm that gynostemium of E. greuteri has strongly reduced clinandrium and does not produce viscidium. We also discuss taxonomic treatment of E. preinensis and E. flaminia, two recently described taxa related to E. greuteri. The results of genetic analyses, as well as the range of phenotypic variability of E. greuteri individuals from various regions of Europe were presented and discussed. The analysis based on the ITS (internal transcribed spacer) nuclear marker showed no differences among E. helleborine, E. purpurata, E. albensis, and E. greuteri, which probably indicates their close relationship. Based on the analysis of plastid regions, six haplotypes were detected in all investigated samples. An exhaustive description of morphological features of E. greuteri is provided. View Full-Text
Keywords: Epipactis greuteri; E. flaminia; E. preinensis; cpDNA; papillae; ITS; orchids Epipactis greuteri; E. flaminia; E. preinensis; cpDNA; papillae; ITS; orchids
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MDPI and ACS Style

Jakubska-Busse, A.; Żołubak, E.; Górniak, M.; Łobas, Z.; Tsiftsis, S.; Steiu, C. A Revision of the Taxonomy and Identification of Epipactis greuteri (Orchidaceae, Neottieae). Plants 2020, 9, 783.

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