A perennial herb that was formerly naturalised on a shady river bank and a roadside bank. Lowland.
C. rhomboidalis was first grown in British gardens in 1775. It was first recorded in the wild in 1978 (Dumfriess.) and was discovered in Westmorland in 1983.
Native of the Jura and the Alps.
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.