Peltigera hymenina (lactucifolia) Common Dog Lichen

Peligera hymenina is a common, widely distributed foliose lichen in Britain and Ireland. It has a large thallus which is brown-grey when dry and green when wet. The suface of the thallus is smooth and shiny and not wrinkled like that of Peltigera membranacea. Apothecia are often abundant on the curled lobes of the thallus. It can be found growing on the ground and as an epiphyte on trees.

Listed under Peltigera lactucifolia by Alan Orange in Flora of Glamorgan (Wade et al, 1994).