A large shrub or small tree which grows in damp or wet ground, mostly in marshes, fens and wet woods, in winter-flooded dune-slacks and by ponds and streams; sometimes in drier sites such as shaded roadsides. Male plants are widely planted as ornamentals within and outside the native range. 0-410 m (Allendale, S. Northumb.).
The distribution of S. pentandra has not significantly changed since the 1962 Atlas. Delimination of the southern limit of its native range is difficult, although the absence of female plants in a population can indicate non-native status.
Eurosiberian Boreo-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
1980. Trees and shrubs hardy in the British Isles, edn 8, IV. Ri-Z.
1990. Willows. A Guide to Some Difficult Plants. :28-40.
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Jalas & Suominen (1976)
1984. Willows and poplars of Great Britain and Ireland. Botanical Society of the British Isles Handbook no. 4.
1965. Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.