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.
Range & Status
Endemic to Cornwall and Devon.
Vigur' s Eyebright has been recorded in 75 1km squares in Cornwall in total, but only 21 since 1999. It is maintaining good populations in the maritime heaths along the north coast (SW64 and SW75), but on many inland heaths it has disappeared, especially north and east of Bodmin Moor.
Habitat & Ecology
On the coast it grows in open areas and along tracks within dry dwarf shrub heath. Inland it grows in wet heath, dry heath and grass heath. Saw-wort Serratula tinctoria is a frequent associate (pers. comm., A. Silverside).
Inland there is loss by habitat destruction, by scrub overgrowth and by overgrazing, but along the coast the threats are fewer. Hybridisation with E. tetraquetra appears to be a threat at St. Agnes Head (SW75), where a recent survey failed to re-find E. vigursii but found the hybrid in abundance.
Most of the sites are protected.
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.