Rozšíření a taxonomická problematika skupiny Dryopteris affinis v České republice

0348963 - BÚ 2011 RIV CZ cze J - Journal Article
Ekrt, L. - Štech, M. - Lepší, M. - Boublík, Karel
Rozšíření a taxonomická problematika skupiny Dryopteris affinis v České republice.
[Distribution and taxonomy of the Dryopteris affinis group in the Czech Republic.]
Zprávy České botanické společnosti. Roč. 45, č. 1 (2010), s. 25-52. ISSN 1211-5258
R&D Projects: GA ČR GA206/07/0706
Institutional research plan: CEZ:AV0Z60050516
Keywords : Dryopteridaceae * ferns * hybridization
Subject RIV: EF - Botanics

Na území ČR bylo studováno rozšíření zástupců skupiny Dryopteris affinis. Byly zjištěni dva zástupci (Dryopteris borreri, D. cambrensis) a jeden kříženec (D. × critica - D. borreri × D. filix-mas). D. cambrensis je vzácným druhem, byl v ČR zaznamenán jen na 29 lokalitách a je poprvé uváděn pro Čechy.

The distribution of taxa of the Dryopteris affinis group in the Czech Republic was studied. Collections of 25 Czech public herbaria were revised and a total of 373 specimens were examined. Two species, D. borreri and D. cambrensis, and one hybrid, D. × critica (D. borreri × D. filix-mas), were recorded in the Czech Republic. D. cambrensis was recently rediscovered for the flora of the Czech Republic after more than 30 years and was recorded as a new species to Bohemia. Twenty-eight localities of the rare D. cambrensis are known from the Czech Republic. An overview of the morphological characters and habitat preferences, distribution maps, the total distribution of the taxa and an identification key are presented.
Permanent Link: http://hdl.handle.net/11104/0189336