White-flowered cultivar of the type species, this horticultural form shares all the botanical characteristics of Erinus alpinus: short-lived perennial of the Plantaginaceae family, native to the mountainous regions of Western Europe, from the Pyrenees to the Alps and the northern Apennines.
The habit is identical to that of the species: low and spreading clumps of 5 to 15 cm, slightly toothed and pubescent spatulate leaves, bright green. The only notable difference lies in the color of the flowers, pure white, which gives the plant in full bloom a particularly luminous appearance, especially when installed in a dark rock crevice or an old wall joint.
In its natural habitat, the species blooms from May to July depending on the altitude. In cultivation, 'Albus' blooms from April in the plains and may offer a partial rebloom in autumn.
Like the type form, it self-seeds freely and can naturalize in limestone joints, although seedlings from this cultivar may sometimes revert to pink-flowered individuals. This tendency to revert to the type form is a common behavior observed over generations.
Same cultural requirements as the species: full sun, poor and very well-drained soil, preferably limestone. Very comfortable in walls, rock gardens, or between the stones of a staircase.