Lobariaceae

Its most famous species is lobariaceae 5 - 15 cm in diameter, with individual lobes 1.02 - 3 cm wide and up to 6 cm long. It is a foliose lichen and its leaf-like thallus is green, leathery and lobed with a pattern of ridges and depressions on the upper surface. Bright green under moist conditions, it becomes brownish and papery when dry. This species often has fine layers of hairs, a tomentum, on its lower surface. The cortex, the outer protective layer on the thallus surface, is roughly comparable to the epidermis of a green plant. The asexual reproductive structures soredia and isidia are present on the thallus surface. Minute 0.5 - 1.5 mm in diameter cephalodia—pockets of cyanobacteria—are often present on the lower surface of the thallus; these spots are conspicuously darker than the green surface of the thallus. Like other foliose lichens, the thallus is only loosely attached to the surface on which it grows.