A deciduous fern of damp deciduous and open conifer woodland on more acidic soils. Lowland.
This species, which is a fertile derivative of the hybrid between D. affinis and D. expansa, is now extinct in Britain and Ireland. Its possible occurrence at Loch Lomond (Dunbarton), where it was collected in 1894, is suspect and whilst the S.E. Galway plant has been well-studied in cultivation, it has never been re-found. A record from Kerry is based on an atypical sterile frond and needs confirmation; it is not mapped.
European Boreal-montane element, but absent from the Boreal zonobiome.
Count of 10km squares in Great Britain: 1
Count of 10km squares in Ireland: 1
Count of 10km squares in the Channel Isles: 0
PLANTATT - Attributes of British and Irish plants. (.zip 1455KB) This dataset was compiled and published in 2004, and last updated in November 2008. Download includes an Excel spreadsheet of the attributes, and a PDF explaining the background and nomenclature. Note that the PDF version is the booklet as published, whereas the Excel spreadsheet incorporates subsequent corrections. A hardcopy can be purchased from the Centre for Ecology and Hydrology.