Hybridization and speciation in the genusDryopteris (Pteridophyta:Dryopteridaceae) on Pico Island in the Azores
Authors:
Mary Gibby
Affiliation:
(1) Department of Botany, British Museum (Natural History), Cromwell Road, SW7 5BD London, England, UK
Abstract:
The cytology of wild hybrids ofDryopteris from Pico, Azores has been examined. This has confirmed the parentage of the hybrids, and provided evidence to support the view that the tetraploid speciesD. crispifolia has evolved in the Azores from two diploid species,D. aemula andD. azorica, by hybridization and polyploidy.