J. Szweykowski

Publications40
h-index9
Citations364
Highly Influential Citations14
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Conocephalum salebrosum (Marchantiopsida, Conocephalaceae) – a new Holarctic liverwort species
Detailed analysis of 270 specimens of Conocephalum conicum (L.) Dumort., mainly from the POZW Herbarium revealed some diagnostic differences between two cryptic species originally detected on the…
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Genetic differentiation without concordant morphological divergence in the thallose liverwortConocephalum conicum
TLDR
Allozyme variation was examined at 33 enzyme loci for 96 populations from throughout the geographical range of Conocephalum conicum (L.)Dum, suggesting that this morphologically defined species is genetically heterogeneous.
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Phylogeny of the European species of the genus Pellia (Hepaticae; Metzgeriales) based on the molecular data from nuclear tRNA(Leu)(CAA) intergenic sequences.
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Isozyme Polymorphism in Natural Populations of a Liverwort, PLAGIOCHILA ASPLENIOIDES.
TLDR
Marked variability in enzyme phenotypes was found both within and between populations, and the evolutionary implications are discussed in terms of the persistent haplophase and ephemeral diplophase of this organism.
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Sphagnum-Polytrichum hummocks - a bryologically neglected plant formation
TLDR
An analysis of this flora showed that these hummocks form a kind of asylum for arctic alpine species, which are not infrequently restricted in their montane occurrence to this interesting plant formation.
Population genetics of scots pine pinus sylvestris forests genetic structure of plus trees in bolewice near poznan west poland
The hybrid origin of the polyploid liverwort Pellia borealis
TLDR
Variation in the polyploid suggests at least three separate origins of P. borealis, suggesting that they are the parents of the allopolyploid.
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Serotaxonomical investigation of the European pine species.
Liverworts of the Bieszczady Zachodnie Range [Polish Eastern Carpathians] - a vanishing relict boreal flora
Genetic differentiation of liverwort populations and its significance for bryotaxonomy and bryogeography (Proceedings of the Symposia on Bryology at the 13 International Botanical Congress, Sydney,…
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