Synonym of old man's beard (lichen of genus Usnea)

A crustose lichen with small upward-pointing fruiting bodies supposed to resemble dressmakers' pins. They include members of the genera Calicium and Chaenotheca.

plural of pin lichen

Letharia vulpina, a bright yellow-green, shrubby, fruticose lichenized species of fungus in the family Parmeliaceae.

plural of wolf lichen

The disease lichen planus.

Any of the genus Cladonia of moss-like lichens.

plural of cup lichen

(medicine) A chronic inflammatory skin disease, often affecting the genitals.