red lichen on boulder in australian forest

australia australian boulder climate coat coating colors coloured colours consociata cover covering crust crustose crusty detail dots ecosystem endemic environment eucalyptus forest fungus geologic growing growth gum huge inhabiting layer lichen lichened like natural nature new organism outside photobiont red rock rockshield rust rust-colored rusty semiarid south stone structural structure surface symbiosis texture tree vegetation wales wall wild woodland xanthoparmelia fragment vegetative