Epilobium brunnescens

Tracheophyta MagnoliopsidaOnagraceaeEpilobiumEpilobium brunnescens


A creeping perennial herb of moist open areas, on gravel, gritty or stony soils, on substrates ranging from acidic to very base-rich. It grows on streamsides, ditches, tracks and paths, screes, quarries, damp stone walls and banks. It spreads by rooting at the nodes, and by seed, and is well-naturalised in many remote localities. 0-915 m (Y Garn, Caerns.) and reportedly higher in Ireland.



World Distribution

Native of New Zealand.

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 8

Reaction (Ellenberg): 4

Nitrogen (Ellenberg): 3


Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3

July Mean Temperature (Celsius): 13.6

Annual Precipitation (mm): 1357

Life form information

Height (cm): 4

Perennation - primary


Life Form - primary


Life Form - secondary


Comment on Life Form

hemi (CTW (1962); cf. Anagallis tenella



Clonality - primary

Extensively creeping and rooting at nodes

Distribution information

Count of 10km squares in Great Britain: 1226

Count of 10km squares in Ireland: 423

Count of 10km squares in the Channel Isles: 2

Atlas Change Index: 1.42

Weighted Changed Factor: 41

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 (147c)
Biological Flora of the British Isles. No. 80. Epilobium nerterioides A. Cunn,
Davey, A. J.
, Journal of Ecology, Volume 49, p.753-759, (1961)

A New Zealand Willow-herb in Wales,
Harrison, S. G.
, Nature in Wales, Volume 11, p.74-78, (1968)

The spread of Epilobium brunnescens, a non-indigenous species, in Cwm Idwal NNR, its effects on the local indigenous flora and the possible effect of climate change on its spread,
Hayward, C. M.
, (1995)

Hybrids of Epilobium brunnescens (Cockayne) Raven & Englehorn (Onagraceae) and their occurrence in the British Isles,
Kitchener, G. D., and McKean D. R.
, Watsonia, Volume 22, p.49-60, (1998)

The genus Epilobium (Onagraceae) in Australasia: a systematic and evolutionary study,
Raven, P. H., and Raven T. E.
, New Zealand Department of Scientific and Industrial Research Bulletin, Volume 216, (1976)