Perennial of the Saxifragaceae family, native to northern Spain, mainly the Cantabrian Mountains and the western Pyrenees. It grows in the crevices of limestone rocks, cliffs, and old stone walls, from the collinean to the subalpine levels.
It forms dense and widely spread clumps, composed of countless small rosettes of bright green leaves, deeply cut into three lobes themselves toothed, hence its name. The evergreen foliage, finely textured, forms a tight and regular carpet that can reach 30 to 50 cm in diameter on a well-established mature specimen, with a flowering height of about 15 to 20 cm.
During flowering, swarms of small white flowers with five petals, borne on thin branched stems, literally cover the foliage to the point of almost completely concealing it. Each flower is modest when taken individually, but the overall effect is strikingly light and profuse. A photo shows the plant naturally colonizing an old limestone stone wall in Spain, a vivid illustration of its adaptation to vertical substrates.
In its natural habitat, its flowering extends from May to July depending on the altitude. In cultivation, it generally blooms in April-May, sometimes as early as late March in sheltered conditions.
It is cultivated without major difficulties in any well-drained substrate, in full light or light partial shade. It tolerates summer drought and is suitable for both walls and rock gardens. Its vigor and ease of cultivation make it one of the most accessible saxifrages of the Dactyloides section for the novice gardener.