Myosotis scorpioides

Tracheophyta MagnoliopsidaBoraginaceaeMyosotisMyosotis scorpioides


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).



World Distribution

Eurosiberian Temperate element; widely naturalised outside its native range.

© P. Shannon

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 9

Reaction (Ellenberg): 6

Nitrogen (Ellenberg): 6


Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.5

July Mean Temperature (Celsius): 14.7

Annual Precipitation (mm): 1037

Life form information

Height (cm): 57

Perennation - primary


Life Form - primary


Life Form - secondary

Perennial hydrophyte (perennial water plant)

Comment on Life Form

winter-green but dying back



Clonality - primary

Shortly creeping, stolons in illuminated medium

Distribution information

Count of 10km squares in Great Britain: 2291

Count of 10km squares in Ireland: 662

Count of 10km squares in the Channel Isles: 3

Atlas Change Index: -0.77

Weighted Changed Factor: -27

Weighted Change Factor Confidence (90%)


Distribution information

JNCC Designations


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

Atlas (213c)
Grime JP, Hodgson JG, Hunt R
1988.  Comparative Plant Ecology.
Hultén E, Fries M
1986.  Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Preston CD, Croft JM
1997.  Aquatic plants in Britain and Ireland.
Welch D
1967.  Notes on Myosotis scorpioides agg. Watsonia. 6:276-279.