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In this study Pickover biomorphs are analysed as being dependent on the chosen complex number system in which iterations of analytic functions are performed. Moran’s spatial autocorrelation function and two forms of entropy, the Shannon entropy and the sample entropy, are chosen in order to find correlations and measure complexity in Pickover biomorphs. These turn out to be strongly correlated and...
The identity of the holotype of Epipactis purpurata Sm. is shown to be demonstrably ambiguous because all its flowers are at the budding stage (pre-anthesis); thus, no crucial diagnostic characters are visible, i.e., gynostemium morphology and undulations of margins of the labella and their shape and color. This way, the specimen is almost identical with several species of Epipactis genus (E. purpurata...
Cypripedium calceolus L. is a threatened species in Poland and critically threatened in Lower Silesia. Among ca. 45 recorded regional subpopulations only 14 currently exist. In the mountains and in the foothills it grows mainly in orchid beech forest Cephalanthero-Fagetum and their modified forms as well as in degraded Central-European oak-hornbeam forest Galio-Carpinetum. The only lowland stand is...
Epipactis palustris (L.) Crantz kruszczyk błotny to jeden z najbardziej zagrożonych gatunków storczyków w województwie dolnośląskim. Spośród 70 stanowisk podawanych z tego terenu przed 1945 rokiem obecnie istnieje jedynie 14. W artykule podano wykaz stanowisk historycznych i aktualnie istniejących oraz zagrożenia dla istniejących populacji
A series of studies on pollination biology of the Epipactis atrorubens (Hoffm.) Besser, E. purpurata Sm., and E. palustris (L.) Crantz populations was conducted in Poland, Lithuania and Czech Republic between 2003 and 2010. The research focused on pollinators and visitors to aforementioned orchid species as well as on the chemical analysis of orchids’ nectar which was done using the GC/MS method....
The article presents the preliminary results of research on changes in the abundance and population density of Epipactis helleborine carried out during the vegetation seasons of 2010 and 2011. The spatial distribution of ramets was analyzed in terms of population changes. The population studied was located in an anthropogenic habitat near the village of Guszczewina on the outskirts of the Białowieża...
The comparative analysis of leaf morphology was performed in E. helleborine (L.) Crantz, E.atrorubens (Hoffm.) Besser, and their interspecific hybrid, Epipactis ×schmalhausenii Richt. The aim of this research was to find out features that would be useful in the taxonomy of the genus Epipactis, and particulary their taxa of hybrid origin. In course of the studies special attention was paid to leaf...
The paper brings a new record about Dark Red Helleborine Epipactis atrorubens (Hoffm.) Besser in the Karkonosze (the Sudetes, NW Poland). The new site is situated 3 km to the west of the center of Szklarska Porêba, at the foot of Czerwone Skałki Mt., 775 m a.s.l. Two flowering and three vegetative ramets were observed here in July 2009. It grows on a small rocky escarpment between the local road and...
This paper presents a new locality of Ophioglossum vulgatum L. found in the south-western Poland in 2009. The population consists of 7001000 specimens.
In the paper we present the results of studies on the variability range of the flower colour, size and shape in D. majalis. The research was carried out in three populations, deliberately chosen so that to exclude the possibility of hybridisation with other orchid species. The obtained results confirm a wide range of phenotypic plasticity of a taxon, in extreme cases causing problems in species identification...
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