Pinguicula dertosensis

A temperate butterwort of Spain named after Tortosa (Roman Dertosa), described from the dripping limestone cliffs of the Ports de Tortosa-Beseit. It is often treated as a subspecies of P. longifolia. It hangs long, strap-shaped leaves from wet vertical rock in summer and retreats to a winter bud (hibernaculum). It needs constantly wet limestone, cool shade and a cold winter rest.