The paper presents new records for 18 vascular plant species from six Eurasian countries. Three taxa (Lepidium densiflorum, Stipa czerepanovii, Xanthium albinum) are reported from Kazakhstan, one (Ranunculus schmakovii) from Mongolia, three (Dianthus campestris, Ranunculus kauffmannii, Viola suavis) from Poland, five (Eragrostis amurensis, Linum catharticum, Ludwigia peploides subsp. stipulacea, Pyrethrum mikeschinii, Solidago canadensis) from Tajikistan, five (Clinopodium menthifolium, Juncus effusus, Mollugo cerviana, Poa sphondylodes, Vulpia myuros) from Russia, and one (Orobanche alba subsp. xanthostigma) from Georgia. Ten of the taxa presented (Clinopodium menthifolium, Dianthus campestris, Eragrostis amurensis, Juncus effusus, Lepidium densiflorum, Mollugo cerviana, Solidago canadensis, Viola suavis, Vulpia myuros and Xanthium albinum) are regarded as alien to the studied areas, whereas the remaining eight are native elements to the flora of the countries. For each species, synonyms, general distribution, habitat preferences, taxonomy with remarks on recognition and differentiation of the species from the most similar occurring in a given country, as well as a list of localities recorded (often far from the previously known areas), are presented

We studied the impact of secondary succession in xerothermic grasslands on a population of Pulsatilla patens, a species of European Community interest. We established two permanent plots with a high number of individuals of P. patens in a xerothermic grassland in Southern Poland. We compared two areas, the first in open grassland (plot A), and the second with overgrowing vegetation (plot B). We assessed the population structure as well as the individual traits of the species. The total abundance of P. patens in the open xerothermic grassland was five times higher than in the overgrowing xerothermic grassland. A randomly clustering distribution was noted only in plot A; in plot B a random type of distribution occurred. The density structure of the rosettes was higher in plot A. The mean number of leaves in rosettes of P. patens as well as dimensions of intermediate stems and leaves of the species is strongly correlated with habitat conditions. The shadowing caused by shrubs and trees and high weeds observed in the overgrowing xerothermic grassland negatively impacted on the number of individuals, distribution, structure and morphology of P. patens.

Streszczenie: W pracy przedstawiono nowe stanowiska 12 rzadkich (lub regionalnie rzadkich) roślin naczyniowych w Polsce, tj. Cochlearia danica , Colchicum autumnale , Cuscuta campestris , Lythrum hyssopifolia , Ostericum palustre , Pedicularis sylvatica , Plantago coronopus , Ranunculus arvensis , Rosa gallica , Sesleria uliginosa , Succisella inflexa oraz Veronica prostrata .

In this paper, an updated map of the distribution of Solidago ×niederederi, a natural hybrid between S. canadensis and S. virgaurea, in Poland is presented using the ATPOL cartogram method. A compiled list of 55 localities of the hybrid within 40 cartogram units (10-km squares) is provided and its negative impact on S. virgaurea is highlighted.

In Central Europe Goodyera repens (L.) R. Br. is considered as species vulnerable to extinction, critically threatened, or even extinct, depending on the region. In recent years, this rare orchid clearly increases the number of sites within its natural range. The aim of the study is to present new data on the abundant occurrence of circum-boreal species in southern Poland (position of localities, the estimated number of specimens, habitat data) that indicate its ecological expansion. The localities of G. repens were described using the topogram method and then its distribution was shown using cartogram method. The study was conducted in the years 2010–2018 in the south-western part of the Świętokrzyskie Mountains (S Poland) on the area of 337,5 km2. During the study the species was found for the first time on eleven localities. The largest populations were observed in secondary pine forests. The results of this study against the background of published data suggest the ecological expansion of the species in Poland, which is facilitated by the availability of suitable habitats. The expansion of this cold-adapted species is interesting in the context of the global warming.