Perennial of the Plantaginaceae family, native to the Balkans, where it grows on forest edges and clearings, rocky slopes, and dry meadows, generally between 500 and 1,500 meters in altitude.
It forms a rosette of lanceolate, glabrous, and shiny leaves — the name laevigata, "smooth," directly refers to this — of a deep green, from which rise erect stems 60 to 100 cm bearing a dense and well-stocked spike.
The flowers are tubular, from creamy white to pale yellow, marked inside with brown-ochre veins; the lower lip bears a characteristic fringe of white hairs. The sepals, of a bright green and clearly visible, form a collar that distinguishes the species from the very close Digitalis ferruginea, with which it shares the general architecture and color range, to the point that the two are sometimes confused in the field.
In its natural habitat, its flowering extends from June to August. In cultivation, it is similar.
It is cultivated in drained soil, fresh to dry, in full sun or light partial shade, and readily reseeds itself.