Aster laevis x novi-belgii (A. x versicolor)
A perennial herb established in waste places, on rubbish tips, by railways and on roadsides from outcast plants from gardens. 0?345 m (Garrigill, Cumberland).
This vigorous hybrid originated in cultivation in Britain in 1790, and was known in the wild by 1800. As with most alien Aster taxa, opinions differ markedly on its frequency, reflecting the taxonomic problems posed by these plants where hybrids appear to form a complete spectrum between the parents, presumably as a result of backcrossing. However, actual proof of this, and of the fertility of the primary hybrids, is lacking.
A hybrid of garden origin; it is not known in N. America but is widely naturalised in C. Europe.
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.