A pioneer species of wet mud and shallow water, found in a wide variety of habitats including the edges of lakes, ponds, reservoirs, rivers, ditches, canals and backwaters. It also occurs in reedswamps and tall-herb fens, and readily colonises sand-, gravel-, clay- and marl-pits. It is shade-tolerant, and is found in swampy Alnus woods and Salix carr. Reproduction is by seed. Lowland.
C. pseudocyperus was lost from many squares in Ireland before 1930. It has declined across much of its British range, but particularly in S.E. and E. England, since the 1962 Atlas. It is sometimes planted at the edge of ponds.
Eurosiberian Temperate element; also in E. Asia and N. America.
PLANTATT - Attributes of British and Irish plants. (.zip 1455KB) This dataset was compiled and published in 2004, and last updated in November 2008. Download includes an Excel spreadsheet of the attributes, and a PDF explaining the background and nomenclature. Note that the PDF version is the booklet as published, whereas the Excel spreadsheet incorporates subsequent corrections. A hardcopy can be purchased from the Centre for Ecology and Hydrology.
Atlas text references
Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols,
, Königstein, (1986)
Sedges of the British Isles. Botanical Society of the British Isles Handbook no. 1, edn 2,
, London, (1982)
Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols,
, Jena, (1965)
Aquatic plants in Britain and Ireland,
, Colchester, (1997)