An annual or biennial herb of wet ground, often growing in open places trampled by livestock or where there has been other disturbance. It occurs in marshes, fen-meadows, rush-pastures, and by lakes, ponds, canals, rivers and streams. Lowland to 530 m in Atholl (E. Perth) and 550 m in Co. Londonderry.
M. laxa was mapped as `all records` in the 1962 Atlas, and apart from local losses in S.E. England, seems little changed in distribution.
Circumpolar Boreo-temperate element, with a disjunct distribution.
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.