Foliose lichen in symbiotic relationship with algae on rainforest tree

lichen foliose lichen foliose algae tree symbiotic symbiosis rainforest green damp forest nature outdoor close up closeup fungus fungi texture plant detail bark growth moss wood surface botany environment flora macro ecosystem leafy trail ecology woods path tranquil botanic trunk pattern landscape foliage humid cover woodland thallus hyphae cortex medulla