What do lichens look like?

Unlike mosses and flowering plants, lichens do not have green leaves or a stem. They may be pale or bright coloured and commonly occur in three forms.

1, Leafy lichens have leaf-like lobes closely or loosely attached to the bark from the lower surface.

2, Bushy lichens are branched and shrub-like, attached to the bark at the base.

3, Crusty lichens are closely attached as if painted on the bark.