Aristolochia paucinervis

Aristolochia paucinervis is a perennial herb with a storage tuber, endemic to the western Mediterranean basin. The page describes it both as a geophyte and as a climbing vine reaching about half a metre in forest understorey. Its leaves are smooth and broad, three to five centimetres wide, with palmate veins. The flowers come in yellow-white and brown-purple forms and have a tube-shaped perianth that traps small flies, which are released once the anthers ripen. In Morocco it is called Barraztam. In Moroccan medicine the powdered root or rhizome is mixed with salted smen, a fermented butter, and applied to skin infections, injuries and gas gangrene, or eaten with honey or salted butter for abdominal pain and chest complaints. The dried root powder is also taken for constipation, colic and as an antidote for snakebite. The page warns that the roots contain aristolochic acids, which are nephrotoxic, meaning poisonous to the kidneys, and carcinogenic when taken internally over a long period.