A gregarious, deciduous fern growing in rocky deciduous woodland and ravines, along stream banks, and on cliff ledges and stable block screes. It prefers moist but open, light-textured mineral soils with a high humus content, and tolerates a moderate range of pH. 0-915 m (Rannoch, Mid Perth).
This species, which is susceptible to heavy grazing, has declined at the edges of its British range, where it has been lost from lowland woods even though the woods themselves often survive. Most of the losses occurred before 1950. It was last recorded in Ireland in 1986.
Circumpolar Boreo-temperate element.
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.
Atlas text references
1988. The Irish Red Data Book. 1. Vascular Plants.
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Jalas & Suominen (1972)
1978. Ferns and their allies. The Island of Mull: a survey of its flora and environment. :12.1-12.7.
1965. Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.
1997. The ferns of Britain and Ireland, edn 2.