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The phylogeographical structure of the European xerothermophilous grass species of Mélica ciliata - M. transsilvanica complex (Poaceae) was assessed based on sequences of the noncoding tmL-tmF region of chloroplast DNA and AFLP data (obtained from the previous studies). Eleven haplotypes were detected within 88 populations collected from the entire distribution ARea. The cleAR geographic structure of cpDNA haplotypes was found. One main haplotype was widespread across Europe and was unique for all central and northern European population. The second high-frequency haplotype was distributed only on the Balkan Peninsula. In a mARked contrast with non-vARiable more northerly populations, the greatest haplotype vARiation was revealed on the Iberian and Apennine Peninsulas, and somewhat smaller on the Balkan Peninsula, suggesting diversity centres and main glacial refugia in these regions. Among these southern refugia, probably mainly the Iberian Peninsula could have significantly contributed to postglacial re-colonisation of the more northerly pARts of Europe. The some Apennine and Balkan lineages were cleARly distinct and spread locally. Source

Guzik J.,Instytut Botaniki im. W. Szafera PAN
Fragmenta Floristica et Geobotanica Polonica

The only known location of CARex vulpinoidea Michx. in Poland was wrongly cited in Polish literature to date: Szczecin [town] (Rostański & Sowa 1987; Rutkowski 1998) and Szczecin Zaborsko (Urbisz 2011) instead of: Puszcza Bukowa forest (orig. "Buchheide") neAR Szczecin (Ascherson & Graebner 1902; Kükenthal 1909; Müller 1904). Source

Due to different views present in contemporARy literature regARding Hordeum secalinum status in the Polish flora (as a native plant or a casual, i.e. ephemerophyte) an attempt was made to elucidate the problem based on original sources and herbARium specimens. According to this reseARch results, at least until 1896 the species grew spontaneously on the halophytic meadows neAR Ostswine (Polish: Odra-WARszów, presently incorporated into Šwinoujście town as its WARszów quARter) on Wolin island (specimen in KRAM) (Fig. 1). It was the only known spontaneous occurrence of the species within the present Polish territory (about 6 km E from the German frontier). During detailed floristic studies cARried out in the yeARs 1956-1963 by Piotrowska (1966), the station was not confirmed and with high probability the species can be regARded as extinct on this site, located on its range limit. At several other locations in Poland H. secalinum was observed only temporARily, introduced neAR Gdansk (second half of the 19th cent, and in 1962) and Kalisz (beginning of 20th cent.). Source

Gladiolus paluster Gaudin is a species protected by the domestic and EU laws. At present, in Poland several individuals of the species occur only in natural reserve "ła̧ka Sulistro wicka" (Lower Silesia, south-western Poland). Seeds derived from this relic population were used in the restoration program of G. paluster in Poland. Genetic diversity of individuals of G. paluster origin from reserve "ła̧ka Sulistrowicka" and currently grown in ex situ culture in Botanical Garden of Wrocław University were studied using AFLPs. The obtained results show that both G. paluster and hybrids of G. paluster and G. imbricatus occur in ex situ culture. We suggest that hybridization took place already at the natural locality in the "ła̧ka Sulistrowicka". Individuals of G. paluster are characterized by a significantly lower genetic diversity than G. imbricatus individuals from natural populations. Source

Ociepa A.M.,Instytut Botaniki im. W. Szafera PAN | Barbacka M.,Instytut Botaniki im. W. Szafera PAN
Polish Polar Research

The well-known Jurassicmacrofloras fromHope Bay at the northernmost tip of the Antarctic Peninsula continue to yield new taxa. This paper reports on a new type of plant reproductive organ. The affinity of this organ remains unclear; it may be affiliated with the Schizaceae or Osmundaceae, but similarities to pollen organs of the Podocarpaceae are also discussed. Because the fossils differ from hitherto known Mesozoic fertile fronds and conifer pollen organs in some details, the new taxon, Spesia antarctica nov. gen. et sp. is proposed. Source

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