This species with a strictly Mediterranean distribution is present, with three subspecies, in Sardinia, Calabria and Sicily; the subsp. nobilis is present in Sardinia, Calabria and Sicily. The life-cycle can be spent part in water, part on moist to dry soil. It grows near springs and rivulets, on the edge of ephemeral pools, on damp rocky walls, from 300 to 1600 m. The species is very rarely found in the outer belt of the temporary ponds of Sardinia. The genus name derives from the Greek 'solen' (channel, tube) and 'ops' (appearance, similarity), referring to the corolla fitted with a well-developed tube; the species name refers to the small size of the plant. Flowering period: April to September.

Italian name(s): Laurenzia di Bivona (Italia).