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.
Tahoma; \colortbl ;\red35\green31lue32;\red0\green0lue255; Range & Status
Native; Suboceanic southern-temperate species. Largely restricted to Hampshire and Cornwall, and considered native only in Cornwall (Pearman, 2008).
Confined to West Penwith, Brynn Moor (SW96) and Bodmin Moor (SX17). Formerly known from 76 1km squares in Cornwall, of which 10 are extant. It is continuing to decline.
Habitat & Ecology
Found in ditches, stream and pool margins, and periodically wet open unvegetated soil patches (including gravel). Generally found amongst short vegetation. It can be a colonist of suitable habitat.
Habitat loss and competition from more vigorous species, especially Grey Willow Salix cinerea subsp. oleifolia.
Most of the remaining sites are not 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.