Perennial of the Saxifragaceae family, this cultivar refers to a selection from the Pyrenees, where S. paniculata colonizes rocks, cliffs, and limestone ledges from the montane to subalpine levels, generally between 1,200 and 2,400 meters. The cultivar name, descriptive rather than individualized, indicates a Pyrenean origin without specifying an exact locality.
The rosettes are small to medium-sized, well-formed, composed of obovate to spatulate leaves, short and fairly wide, of a medium green to slightly glaucous gray-green. The white limestone edging is present and clearly visible on the edge of each leaf. The plant forms dense and regular cushions, with progressive growth, spreading over rocks or draining substrates with remarkable uniformity.
At the time of flowering, numerous slender flower stems, distinctly tinged with reddish-brown, rise above the cushion, bearing loose and airy panicles of cream-white to white flowers, with rounded petals. This contrast between the dark stems and the light flowers, above the gray-green foliage, is particularly clear in natural conditions and constitutes one of the most attractive aspects of this Pyrenean form.
In its natural habitat, its flowering extends from June to August depending on the altitude. In cultivation, it generally occurs in May-June.
It requires a very well-drained substrate, preferably limestone, in full light, without moisture accumulation in winter. It is suitable for rock gardens, trough cultivation, or in the crevices of limestone walls.