Hieracia balcanica VIII. Hieracium nigrescens subsp. brachytrichellum (Asteraceae), a new taxon in the Balkan flora

Szeląg, Zbigniew

doi:10.2478/s11756-012-0008-y

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…The few sexually reproducing diploid species of Hieracium s.s. are mostly confined to unglaciated refugia along the southern margin of the distribution range (Fehrer, Krak & Chrtek Jr, ), whereas a huge number of polyploid and endemic apomicts (Mráz, ) occur in the comparably recently deglaciated regions of Europe (Tyler, ). In recent decades, more and more species have been recognized and many Hieracium taxa have been newly described (Rich, Edwards & Pearman, ; Rich, ; Szelag, ; Gottschlich et al ., ; Haveman, ), although their genetic distinctness has hardly been tested. Nevertheless, it can be assumed that many existing potential taxa are actually still unrecognized.…”

Section: Introductionmentioning

confidence: 99%

Genetic structure of the rare and endangeredHieracium wiesbaurianumgroup (Asteraceae) in Bavaria

et al. 2014

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The rare and endangered Hieracium wiesbaurianum species group shows a scattered relictual distribution in Bavaria. Recently, a couple of populations were discovered which clearly differ from all other populations. If these must be considered as taxonomically independent units, they would be of crucial conservation interest, because of the sole responsibility that Bavaria has for these worldwide endemics. We therefore analysed the genetic structure of H. wiesbaurianum in a comparative approach. Our analysis comprised 37 populations of 13 taxa of H. wiesbaurianum, H. bifidum and H. laevigatum, including three potentially new taxa. We applied amplified fragment length polymorphism (AFLP) analysis and observed only limited genetic variation within populations and taxa. Nevertheless, each studied individual exhibited a unique genotype. An analysis of molecular variance revealed high levels of genetic variation between taxa, but populations were genetically less different. The clear genetic differentiation between the studied taxa was supported by neighbor‐joining cluster analyses and principal coordinate analyses in which every individual was clearly assigned to its respective taxon. The three potentially new taxa were genetically as well differentiated as the other taxa included in our study. This supports the assumption that they should be treated as taxonomically independent units of high conservation interest. Therefore, the genetic analysis confirmed the morphologically based classification of the studied Hieracium taxa. © 2014 The Linnean Society of London, Botanical Journal of the Linnean Society, 2015, 177, 112–123.

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Section: Introductionmentioning

confidence: 99%

Genetic structure of the rare and endangeredHieracium wiesbaurianumgroup (Asteraceae) in Bavaria

et al. 2014

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“…(Asteraceae) and Carex curvula All. (Cyperaceae); Horvat and Pawłowski 1938;Redžić 2007;Szeląg 2012). Thus, the Vranica Mts represents an important hub for migration between the Alps, the Carpathians and the other ranges on the Balkan Peninsula.…”

Section: Resultsmentioning

confidence: 99%

On the Leucanthemopsis alpina (L.) Heywood growing in the Illyrian region

Tomasello¹,

Konowalik²

2020

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Leucanthemopsis alpina (L.) Heywood (Asteraceae, Anthemideae) is a small, caespitose plant growing in high alpine environments in all the main southern European mountain ranges. However, the species status in the Balkan Peninsula (and especially in the Dinaric Alps) is not very well known. Surrounding this area, different L. alpina subspecies are found in the Eastern Alps and in the Carpathians. These subspecies differ from one another, both morphologically and in chromosome number. The present study aims to better characterise the populations of L. alpina in the Illyrian and Balkan regions by undertaking a comprehensive survey of herbarium collections for the species in this area, by applying flow cytometry for ploidy determination and by sequencing of two chloroplast markers. Results from our investigation suggest that the only population of the species in the Dinaric Alps is found in the Vranica Mts (Bosnia and Herzegovina). This population consists of diploid plants (unlike tetraploid populations from the Eastern Alps) that are slightly distinct genetically from those of the subspecies growing in the Eastern Alps and the Tatra Mts. Both the ploidy and their genetic distinction indicate that Vranica Mts most probably served as a refugium for the species during the Pleistocene glaciations. Considering its isolated geographical range and its genetic distinction, the population of L. alpina growing in the Vranica Mts should be considered as a separate subspecies.

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Hieracia balcanica VIII. Hieracium nigrescens subsp. brachytrichellum (Asteraceae), a new taxon in the Balkan flora

Cited by 2 publications

References 8 publications

Genetic structure of the rare and endangeredHieracium wiesbaurianumgroup (Asteraceae) in Bavaria

Genetic structure of the rare and endangeredHieracium wiesbaurianumgroup (Asteraceae) in Bavaria

On the Leucanthemopsis alpina (L.) Heywood growing in the Illyrian region

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