Perennial of the Saxifragaceae family, this cultivar of Saxifraga cochlearis belongs to the Ligulatae section. Like the type species, it originates from the Franco-Italian Maritime Alps, where the encrusting saxifrage colonizes cliffs and limestone walls, between approximately 500 and 2,000 meters. 'Probynii' is distinguished by an intermediate habit between the type species and the 'Minor' cultivar, with smaller rosettes than those of the species, but relatively elongated and very flexible flower stems that stretch between rocks with particularly striking elegance.
The spatulate, gray-green leaves are bordered by the characteristic white edging of limestone deposits from the hydathodes. The flower stems, slender and dark red, can extend up to 20–25 cm and bear loose panicles of pure white flowers with well-separated, slightly spatulate petals. The disproportion between the smallness of the rosettes and the abundance of the flowering is one of the most charming features of this cultivar.
In its natural habitat, its flowering extends from June to July. In cultivation, it generally occurs in May-June.
It requires a very well-drained limestone substrate, a sunny to semi-shaded exposure, and protection against stagnant moisture in winter. Cultivation nestled between limestone rocks, where the stems can freely spread over the rock, suits it perfectly.