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
Native. European Temperate species. Widespread in southern Britain though rarer
in south-western and northern areas, scattered in Wales and Ireland and very rare in
Restricted to three or four wetland sites on St. Mary' s (SV91) and Tresco (SV81). It may still occur in Gunwalloe Marsh (SW62) on The Lizard, however, the habitat has deteriorated for this particular species.
Habitat & Ecology
It grows in marshy fields and open reed beds.
Loss of wetland and lack of appropriate management.
The Gunwalloe site is managed by the National Trust, primarily for birds. On the Isles of Scilly most sites are either SSSI or managed by the IOS Wildlife Trust.
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.