Taraxacum nigricans, T. alpestre and allies in the Taraxacum sect. Alpestria: taxonomy, geography and conservation status

0382507 - BÚ 2013 RIV CZ eng J - Článek v odborném periodiku
Štěpánek, Jan - Kirschner, Jan - Jarolímová, Vlasta - Kirschnerová, Ludmila
Taraxacum nigricans, T. alpestre and allies in the Taraxacum sect. Alpestria: taxonomy, geography and conservation status.
Preslia. Roč. 83, č. 4 (2011), s. 537-564. ISSN 0032-7786. E-ISSN 0032-7786
Grant CEP: GA ČR GA206/07/1555; GA MŠMT LC06073
Výzkumný záměr: CEZ:AV0Z60050516
Klíčová slova: agamosperly * geografical parthenogenesis * typification
Kód oboru RIV: EF - Botanika
Impakt faktor: 2.521, rok: 2011

A long-standing problem with the taxonomic status and synonymy of the names Taraxacum nigricans (Kit.) Reichenb. and T. alpestre (Tausch) DC. is resolved. These two names, the oldest ones referable to high mountain dandelions in Central Europe, are typified, and a detailed comparison of these species’ morphology, genotype make-up, karyotypes and distribution is provided, together with a discussion of other cases of similar and probably closely related agamospermous taxa of Taraxacum and Hieracium. Taraxacum nigricans (2n = 32) and T. alpestre (2n = 32) are endemic to the Nízke Tatry Mts, Slovakia, and the Krkonoše/Karkonosze Mts, Czech Republic/Poland, respectively. A detailed analysis of cultivated and wild material from the Carpathians revealed the existence of a sexual taxon very close to the above two species and endemic to the region of the Bucegi Mts, Romania. It is described as T. carpaticum.
Trvalý link: http://hdl.handle.net/11104/0212709