A large perennial, rhizomatous herb, rarely grown in gardens but found naturalised on a roadside verge, grassland and woodland at Wasdale Hall (Cumberland) and in rough ground in a few other localities. Lowland.
This species was in cultivation in Britain by 1917 and first recorded from the wild in 1978 at Wasdale Hall (Cumberland).
Native of E. Asia.
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.