A creeping mat-forming perennial herb naturalised in damp or wet places such as marshes and flushes, and on riversides and river shingle. It reproduces by seed and vegetatively from stem fragments. Generally lowland, but upper altitudinal limit unknown.
M. luteus was introduced into cultivation c. 1826. It is very local and has been much over-recorded for M. x robertsii (M. guttatus x M. luteus). The map may contain some errors, particularly amongst the pre-1987 records.
Native of S. America (Andes).
Count of 10km squares in Great Britain: 186
Count of 10km squares in Ireland: 5
Count of 10km squares in the Channel Isles: 0
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.