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We provide information about two species, Pilosella bauhinii and P. cymosa subsp. vaillantii (Asteraceae), from new localities in north-central Poland (ATPOL DC18). All individuals of both species grew on a railway embankment in Górzno-Lidzbark Landscape Park. The ecological preferences for P. cymosa and P. bauhinii estimated according to average Ellenberg values nearly coincided with the original description of Ellenberg. We also sequenced the barcode marker, plastid trnH-psbA intergenic spacer, for two individuals of P. bauhinii, three specimens of P. cymosa subsp. vaillantii, and additionally two individuals of P. officinarum L. and one H. murorum L. growing in close proximity. A pairwise comparison of trnH-psbA sequences showed that each species has a unique haplotype. Taking into account their morphological coherence, it is possible that both P. bauhinii and P. cymosa have not hybridized yet, at least locally, with the more abundant species (e.g., P. officinarum). A search for reference sequences did not provide additional information because of the low quality of the reference database for this group in GenBank. Only 14 sequences of trnH-psbA were available with some apparently being misidentified or of low quality. None were identical to sequences of P. cymosa subsp. vaillantii and P. bauhinii found in this study.
In 2006, ca. 60 individuals of Gentiana cruciata were found in the Strzyżowskie Foothills. Until recently, only one locality of the species in the area has been reported from Kołaczyce in the Wisłoka River valley by Knapp in the 19th century. The new locality is situated in the Wielopolka River valley on an S-SW-W slope with varied inclination. In total, 16 phytosociological relevés were taken with the use of the Braun-Blanquet method in patches comprising Gentiana cruciata. The patches were characterised by high proportions of species from the classes Molinio-Arrhenathereta, Festuco-Brometea, and Trifolio-Geranietea. Given the dominance of meadow species, the community was classified as a thermophilic fresh meadow from the alliance Arrhenatherion. An upward trend was noted in the analysed population, as the number of the individuals increased to ca. 160 in 2014
The measurements and the observations of Liriodendron tulipifera L. in the central part of Polish Pomerania were conducted in the years 2002-2005. The height of the trees was measured with the use of Suunto heigh gauge, and the trunk perimeter with the aid of the tape measure in the height of 130 cm of the trunk length measured from the soil level. During researches we have found 9 new locations of yellow-poplar trees. The largest trunk perimeter – 330 cm, possesed the individual of it in Skoczów Kołobrzeski. The highest yellow-poplar tree was measured in Strzykocin. The tree reached the height of 27 m.
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Microbotryum bistortum, M. dianthorum, M. superbum and M. langerheimii, rare species of smut fungi are reported from new localities in Poland, mostly in protected areas. Dianthus superbus subsp. superbus is a new host for M. superbum observed. Taxonomical status of M. carthusianorum and M. superbum is discussed in the paper.
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