S. nodosa is a plant of damp habitats, principally in mires and springs irrigated with base-rich water, but also in open, calcareous, sandy habitats, especially dunes and dune-slacks and sometimes in drier calcareous grassland. Generally lowland, but reaching 850 m on Glas Moel (Angus).
This species was mapped as `all records` in the 1962 Atlas. There has been a widespread decline in S. England, and analysis of the database reveals that this has occurred since 1950. This reflects the loss of open, calcareous habitats.
Eurosiberian Boreo-temperate element; also in 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
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Jalas & Suominen (1983)
1965. Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.