A large plant grows along the canal side; a sort of thistle although it is not spiky: the Montpellier thistle. Its oval, pointed leaves are edged with large, stiff but non-spiky cilia. Its flowers are pink. In France, it is only found in the Alps and the Pyrenees and a few departments in the south. Associated with wet areas, this species has become rare in many regions because of damage to its habitat.