The aim of this study was to determine the current status of the population of marsh helleborine at a locality in the Wielkopolska National Park. Variability in generative shoots was analysed. Recorded results were compared with a study published in the 1990's, in which this locality was described. Since that time the area covered by that population has decreased; nevertheless, it exhibits characteristics of being in a good condition. In that population three forms of that species were reported: f. palustris, f. longibracteata and f. ochroleuca. The greatest threat for the existence of that heliophilous orchid was connected with the overgrowing of its habitat, for this reason measures should be taken to prevent succession and encroachment of trees and shrubs to that area.
The paper presents results of geobotanical investigations carried out in the projected “Ciswickie Bagna” nature reserve near Grodziec (eastern Wielkopolska). Rich flora of vascular plants consists of 274 taxons, including 10 species protected by law, e.g. Osmunda regalis L. In 41 plant communities found, 24 are endangered in the Wielkopolska including the E category (dying out, directly threatened with extinction) represented by as many as 7 associations with the most valuable forest community of the reserve Vaccinio uliginosi–Pinetum Kleist 1929 nom. inv.
In the present paper a new locality of marsh helleborine (Epipactis palustris (L.) Crantz) on the administrative boundary of Poznan city and Koziegłowy village is described. It is on an artificially constructed railway enbankment, hence being a highly antropogenic location. The occurrence of this species on such untypical locality is shortly characterized.
In the present paper two new localities of the royal fern (Osmunda regalis L.) from Ciświca Nowa and Łomów near Stawisko (Forest District Grodziec) are described. The occurrence of this species in different forest communities is shortly characterized.