Synantropijne stanowisko Erysimum wittmannii Zaw. (Brassicaceae) w BeSkidzie Sądeckim

A new local population of a Carpathian endemic plant species, Erysimum wittmannii, was found in Szczawnica in concrete-filled crevices between large stones on a steep slope falling to the Dunajec River, slightly downstream from the stream Grajcarek, when walking from Krościenko. This is certainly its largest, although anthropogenic, local population in the Polish Carpathians. On 14 July 2020, it included 45 fruiting individuals and two flowering ones.

Nowe stanowisko Carex buekii (Cyperaceae) na Pogórzu Rzeszowskim

Carex buekii is a rare species in Poland. In 2020, the new locality of this species was found in the Rzeszów Foothills (SE Poland, ATPOL grid square FF78).

The vascular flora ecological diversity in the mid-field woodlots situated on the agricultural outskirts of Wrocław

The paper presents an analysis of the ecological requirements and sociological-ecological relations of 403 species of vascular plants recorded in 82 mid-field woodlots located among crop fields in the agricultural outskirts of Wrocław. The aim of the research and analyses was to determine what is the species composition of these woodlots and whether they are ecologically more similar to those situated in environment of farmlands or urban wastelands. The authors assumed the latter. It was found that the mid-­ -field woodlots occupied less than 1% of arable land and were located exclusively in close proximity to the city’s administrative borders, and more than half of them were related to the hydrographic network of the area. Their flora, in general assessment, shows a great variety in terms of water requirements and has the features of woodlots described from typically agricultural areas. This applies to the dominance of forest, shrub and meadow species with a constant, usually not exceeding 20%, share of ruderal plants and a small number of weeds in crops. Thus, the assumption that the flora of the studied woodlots will show signs of ruderalization to a large extent has not been confirmed. 72% of species occurred in no more than 10 objects, which shows that the described ecological diversity of the flora studied is based on single or few locations. The most frequent species were nitrophilic and in over 50% they represented a group of shrub communities. The list of the species recorded with estimation of their frequency is provided.

Górski gatunek Chamaenerion palustre (Onagraceae) w Wielkopolsce

Chamaenerion palustre is distributed in Poland mostly in mountains. It was found in the lowland of Wielkopolska at two ruderal localities on rocky substrates: in 2008 in the town of Buk on a railway siding, and in 2019 in the town of Głogów near railway tracks at the train station.

Nowe gatunki we florze mchów Wigierskiego Parku Narodowego

In the years 2017–2019 bryological investigations were carried out in the Wigierski National Park. As a result, five moss species new to this area have been found – Dicranoweisia cirrata, Homomallium incurvatum, Orthotrichum pulchellum, Serpoleskea subtilis and Zygodon rupestris. The paper provides information about their localities and habitats.

Mchy i wątrobowce rezerwatu Molenda (Polska środkowa)

The paper presents the results of studies on bryophyte flora of the Molenda forest reserve located in the Central Poland. Fifteen species of liverworts and 73 species of mosses were found. Twenty one of these species are considered to be partially protected by law, three endangered and ten rare in the region. Epigean bryophyte constitute the largest ecological group in the bryophyte flora, consisting of 55 species (62% of total flora), followed by epixylic species which are represented by 48 species (54%). The most interesting were taxa threatened and regionally rare, such as Nowellia curvifolia (Dicks.) Mitt., Callicla­dium haldanianum (Grev.) H.A. Crum, Dicranoweisia cirrata (Hedw.) Lindb., Orthodicranum tauricum (Sapjegin) Smirnova, Orthodontium lineare Schwägr., Orthotrichum pulchellum Brunt., O. stramineum Hornsch. ex Brid., Sciu­ro-hypnum refle­xum (Starke) Ignatov & Huttunen, Ulota bruchii Hornsch. ex Brid. and U. crispa (Hedw.) Brid.

Nowe stanowisko Plantago maritima (Plantaginaceae) w Wielkopolsce

Plantago maritima is obligatory halophyte vulnerable (VU) in Poland. The new local population was found on 20 August 2013. It was located on a roadside about 4 km from Nowogród Bobrzański, beside the road to Zielona Góra. It was composed of two flowering clumps, which fruited later (22 October 2013).