Perennial of the Rosaceae family, this circumpolar species is found in the arctic and subarctic regions of the northern hemisphere, as well as in the mountainous ranges of Europe, Asia, and North America, where it descends southward at altitude. In the Alps and the Pyrenees, it occupies limestone lawns, stabilized screes, and windy crests, generally between 1,500 and 3,000 meters.
It forms creeping and dense mats, rarely exceeding 10 cm in height, which can spread over large areas. The leaves are small, oval, deeply crenate, dark green and glossy on the upper side, whitish and tomentose underneath — a characteristic adaptation to extreme alpine conditions that is easily observable. They persist in winter, giving the plant a semi-persistent appearance.
The flowers, solitary and borne on slender erect peduncles, have eight pure white petals arranged around a heart of yellow stamens — the species name, octopetala, precisely recalls this feature. After flowering, the achenes end in long silvery feathery styles, forming very ornamental woolly heads.
In its natural habitat, its flowering extends from June to August depending on altitude. In cultivation, it generally occurs in May-June.
It requires a limestone soil, very well-drained, poor, and full sun exposure. Perfectly hardy, it withstands extreme cold but dreads excess winter moisture in the plains. It integrates ideally into limestone rockeries and alpine gardens.