The descriptive text, below the map, is from the Cornish Red Data Book (2009). The map on this web page depicts the organisms distribution and shows the records made pre-2000 and those made since.
3 Range & Status
Native; a Mediterranean fern, which occurs on the Isles of Scilly and Guernsey.
Restricted to a number of sites on one area of coastal heathland on Wingletang Down, St. Agnes in the Isles of Scilly (SV80).
Habitat & Ecology
It occurs in short turf on shallow soils around granite rocks on coastal heathland.
Mainly lack of heathland management or uncontrolled burning.
The locality is a SSSI.
I.J. Bennallick, S. Board, C.N. French, P.A. Gainey, C. Neil, R. Parslow, A. Spalding and P.E. Tompsett. eds. 2009. Red Data Book for Cornwall and the Isles of Scilly. 2nd Edition.Croceago Press.
The Cornish Red Data Book Project was led by the Cornwall and Isles of Scilly Federation for Biological Recorders (CISFBR). The full text and species accounts (minus the maps) are available on the CISFBR website.