Perennial of the Campanulaceae family, one of the most widely distributed of the genus, present in almost all of Europe, temperate Asia, and North America. It colonizes a great diversity of open environments: poor grasslands, moors, rocky embankments, cracks in old walls, roadsides, and high-altitude meadows, from sea level to subalpine levels, around 2,500 meters.
It forms light and graceful tufts, 15 to 30 cm in height depending on conditions, with thin and flexible stems bearing narrowly lanceolate cauline leaves, contrasting with the reniform to cordiform basal leaves, often disappeared at the time of flowering, which has long intrigued botanists and earned the plant its epithet.
The flowers are hanging bells of a bright blue-violet, with five delicately flared lobes, swaying at the end of filiform peduncles with a characteristic airy lightness. When conditions suit it, the plant can spread freely by suckers and spontaneous seeding.
In its natural environment, its flowering extends from June to September. In cultivation, it generally covers the same period with great persistence.
It is content with any well-drained soil, poor to moderately rich, in full sun or light partial shade. Ideal for naturalized rock gardens, walls, and gardens with a wild character.