A rhizomatous perennial fern, forming dense colonies on a variety of substrates, including sheltered acidic or, rarely, mildly basic rocks, and trees in humid sites. It also occurs on damp upland cliffs, boulder scree and, rarely, old walls. 0-1005 m (Macgillycuddy`s Reeks, S. Kerry).
The distribution of H. wilsonii is largely stable, although there have apparently been losses since the 1962 Atlas, particularly in upland areas of C. and E. Scotland. Some of this may be due to under-recording.
Oceanic Boreo-temperate element; confined to the hyperoceanic zone of W. Europe and Macaronesia.
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
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.
1997. The ferns of Britain and Ireland, edn 2.
1972. Biological Flora of the British Isles. No. 126. Hymenophyllum tunbrigense (L.) Sm. (pp. 245-258), Hymenophyllum wilsonii Hooker (258-268). Journal of Ecology. 60:245-268.