A small, rhizomatous perennial of mountain habitats. It is found on damp rock ledges, at the open edges of stony streams and flushes and in thin grassland. It is a good indicator of substrates which are at least slightly base-rich. From sea level in N. Scotland, but generally above 300 m and reaching 1190 m on Ben Lawers (Mid Perth).
In Britain the distribution of T. alpinum is stable; in Ireland it has not been recorded recently at sites in Co. Antrim and Co. Down, despite searching, and further fieldwork is required to establish its current status elsewhere.
Circumpolar Arctic-montane element, with a disjunct distribution.
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.
Atlas text references
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Jalas & Suominen (1989)
1965. Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.