Dryopteris lacunosa – a new species of the Dryopteris affinis aggregate (Dryopteridaceae, Pteridophyta)

Abstract

D. lacunosa S. Jess., Zenner, Ch. Stark & Bujnoch is triploid, shows specific phloroglucinol and RAPD band patterns and can also be distinguished morphologically from the so far described taxa of this aggregate. Up to now specimens have been recorded from northern Italy, Austria, Switzerland, France, Germany, Great Britain and Ireland.