Equisetum hyemale (Rough Horsetail)
A slow-growing, evergreen herb forming colonies of shoots from branching rhizomes. It prefers heavy soils derived from sand or clay which are permanently moist and have a high mineral and silica content. It is usually found in shaded open woodland beside streams and rivers, but also grows in base-rich moorland flushes and sand dunes. 0?610 m (Glen Lyon, Mid Perth).
Most losses of E. hyemale occurred before 1930, probably due to drainage and an increase in grazing and trampling of riverbanks by livestock. However, many new sites have been discovered since the 1962 Atlas.
Circumpolar Boreo-temperate element.
Count of 10km squares in Great Britain: 238
Count of 10km squares in Ireland: 112
Count of 10km squares in the Channel Isles: 0
Atlas Change Index: 0.3
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.