A wiry, tufted perennial herb which is characteristic of wet peaty heath and moorland, raised and valley mires and upland flushes on acidic substrates. 0-1040 m (Carrantuohill, S. Kerry).
J. squarrosus has been lost from many sites in S. and E. England since the 1962 Atlas, due to drainage and agricultural improvement. The distribution is stable elsewhere.
Suboceanic Temperate element; also in Greenland.
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
1962. La flore atlantique européenne. Documents pour les cartes des productions végétales serie Europe-Atlantique, vol. 1.
1988. Comparative Plant Ecology.
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
1965. Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.
1966. Biological Flora of the British Isles. No. 101. Juncus squarrosus L. Journal of Ecology. 54:535-548.