A stoloniferous or rhizomatous perennial herb found in damp or wet habitats, usually in fertile, calcareous to mildly acidic soils. It is usually terrestrial, occurring by lakes, ponds, rivers and streams, in marshes and in fens, but may sometimes be aquatic, forming submerged patches or floating rafts. 0-600 m (Moor House, Westmorland).
The distribution of M. scorpioides has been generally stable over many decades. It has sometimes been confused with M. secunda, and some errors may be included on the map.
Eurosiberian Temperate element; widely naturalised outside its native range.
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
1988. Comparative Plant Ecology.
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
1997. Aquatic plants in Britain and Ireland.
1967. Notes on Myosotis scorpioides agg. Watsonia. 6:276-279.