Mimulus guttatus

Tracheophyta MagnoliopsidaScrophulariaceaeMimulusMimulus guttatus


This vigorous perennial herb is found in wet places by streams, rivers and ponds, in damp meadows, marshy ground and open woodland. It spreads both by seed and vegetatively, rooting from the nodes in wet mud or gravel. Generally lowland, but upper altitudinal limit unknown.



World Distribution

Native of western N. America.

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 9

Reaction (Ellenberg): 6

Nitrogen (Ellenberg): 6


Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.2

July Mean Temperature (Celsius): 14.5

Annual Precipitation (mm): 1020

Life form information

Height (cm): 50

Perennation - primary


Life Form - primary




Clonality - primary

Extensively creeping and rooting at nodes

Count of 10km squares in Great Britain: 996

Count of 10km squares in Ireland: 44

Count of 10km squares in the Channel Isles: 4

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.