The wolf lichen is a type of lichen that grows on trees.

Wilson's lichen is a chronic inflammatory skin condition.

I found a cup lichen growing on the tree trunk.

Lichen sclerosus is a chronic inflammatory skin disease that primarily affects the genital and anal areas.

I found several map lichens on the tree trunk.

Beard lichens are a type of lichen that grows on trees.

I found several pin lichens growing on the tree trunk.

The forest floor was covered in wolf lichens.

I found several cups of lichens growing on the tree trunk.

Lichenin is a type of glucan found in some lichens.