A densely tufted perennial herb occurring on peaty moors and bogs over acidic soils, persisting even in burnt and heavily deer-grazed areas. It is also local on open ground on wet lowland heaths in S. & E. England, where it often avoids the wettest sites and favours grazed, burnt and trampled areas. 0-1190 m (above Caenlochan, Angus).
A perennial herb known only on acidic, peaty moorland where it occurs mainly on the margins of Sphagnum mires in areas subject to some base-enrichment. From 75 m to 620 m (Scotsman`s Knowe, Cheviot.).