Empetrum nigrum subsp. hermaphroditum
A low-growing evergreen shrub, favouring moderately well-drained acidic soils and occurring in dwarf shrub and Racomitrium heaths, rock crevices and dry heather moor, including areas of late snow-lie. Usually montane, occurring from 610 m to 1130 m in the Cairngorm (Easterness), but formerly on coastal dunes at Tain (E. Ross).
The two subspecies can occur together, but subsp. hermaphroditum replaces subsp. nigrum at the highest altitudes. The current distribution is similar to that in the 1962 Atlas, and it is probably still present in many of the squares for which there are no recent records.
Circumpolar Boreo-arctic Montane element; its distribution is more northerly than the Boreal-montane subsp. nigrum.
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.