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. Oceanic Temperate grass. Disjunct populations are seen in western Ireland, the Lleyn Peninsula in Wales, the New Forest area, northern Scotland and The Lizard.
It has been recorded at six sites on Lizard Downs and Lower Predannack Downs
Habitat & Ecology
It grows in pools on the heath that are subject to winter flooding.
Lack of grazing to keep the suitable sites open.
The sites are all protected, and are managed by the National Trust or Natural England.
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.