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Oenothera oehlkersii Kappus ex Rostański - a new evening-primrose species in Polish flora

Oenothera oehlkersii Kappus ex Rostański - a new species of Polish flora - was found on the Przemyśl Foothills. The species is a hybrid between Oe. glazioviana Micheli in Mart. and Oe. suaveolens Desf. ex Pers. In this paper, authors present some features useful in recognizing the parental species and the hybrid one.

Abstract

These considerations have been based on the updated list of archaeophytes appearing in Poland. The extent of endangerment has been assessed for particular species according to the updated IUCN classification. Non-threatened and invasive species have also been taken into consideration. A number of quite fundamental changes have been made to the classification, as compared to the publication of Zając et al. of 2009.

Abstract

Among the 2750 species of the Polish vascular flora, about 500 species are threatened with extinction and 430 of them are strictly protected by national law. The FlorNatur project for the ex situ conservation of the most endangered species was started in 2009. The aim of the project is to collect seeds of 61 species from 161 sites in eastern Poland and store them in the Seed Bank of the Polish Academy of Sciences Botanical Garden - Center for Biological Diversity Conservation in Warsaw- Powsin. A complementary program is being carried out by the Forestry Gene Bank at Kostrzyca in western Poland. Their task is to collect 58 species from 129 natural sites in the western part of Poland. To date, seeds of 31 species from 56 populations have been collected, tested and stored in liquid nitrogen.

Abstract

To investigate present and historical distribution of Equisetum ×moorei in Poland and its habitat requirements, field studies at sites of potential occurrence of this hybrid taxon as well as literature and herbarium search were performed. As a results of these investigations, E. ×moorei was found at five contemporary and at a few historical localities in the present territory of Poland. Since the Equisetum populations near Olkusz (S Poland) showed phenotype similar, to some extent, to triploid hybrid E. ×ascendens, we performed nuclear DNA content analysis of these populations. However, it turned out that the investigated individuals belonged to a diploid taxon that can be ascribed to E. ×moorei.

Abstract

Erigeron sumatrensis is newly reported as casual alien in Poland. A single plant was found growing on the edge of the roadside in Głogoczów near Mogilany, Lesser Poland Voivodeship, southern Poland. The locality was mapped by using the ATPOL cartogram method, and the pathway of introduction by road transport was presented.

The New Locality of Chenopodium Pumilio R. Br. in Poland

The clammy goosefoot Chenopodium pumilio R. Br. is a rare anthropophyte in the Polish flora. Hitherto, this species was recorded in Gdańsk and Rybnik. The present study describes the newly-discovered locality in Stryków near Łódź (Central Poland), the occurrence of this species in Poland and the general geographical distribution in the world.

Abstract

In this paper, a new distribution record of Phytolacca acinosa in Poland is presented. It was found on 30 September 2018 in Kraków, southern Poland, growing in a hedge of Ligustrum vulgare. Currently, it should be treated as a casual alien species in the Polish flora. The updated map of the distribution of P. acinosa in Poland is provided using the ATPOL cartogram method.

Eragrostis pilosa (L.) P. Beauv. (Poaceae) in Poland

The paper presents new data on the occurrence of Eragrostis pilosa in Poland. The species has been considered as an ephemerophyte in the Polish flora. A new locality of E. pilosa was found in the railway areas of Nowosielce near Sanok (southern Poland) in 2007. The occurrence of the species at this locality was confirmed in 2008 and 2009. Because the species is established in anthropogenic habitats, it might be regarded as an epecophyte in Poland.

Abstract

In 2013 and 2018, the occurrence of alien Dittrichia graveolens was confirmed within 126 road sections (1-kilometre) of the A4 highway in the Lower Silesian Province and Silesian Province, south-western Poland. During five years the increase in abundance has been recorded within 50 sections (52.1%), a decrease within 11 sections (11.5%), whereas within 35 sections (36.5%) it remained unchanged. New data suggest that D. graveolens is fully established in the Polish flora, and it should be classified as a potentially invasive species.

Rare and endangered species in communities of the Adenostylion alliariae alliance in the Carpathian Mountains

The Adenostylion alliariae alliance (Mulgedio-Aconitetea class) comprises plant communities which grow optimally in the subalpine zone of the European mountain ranges. The flora of these communities consists of more than four hundred taxa of vascular plants. Some of the diagnostic species are valuable and rare, either in the Carpathians as a whole or in the countries in which the Carpathians lie. In the flora of the plant communities studied, five taxa are indexed in the Polish Red Book of Endangered Plant Species, thirteen taxa are endemic to the Carpathians, and fourteen represent the eastern biogeographical element in the Polish flora. Two taxa are listed in the Annex II of the Habitats Directive.