Calicium
| Calicium | |
|---|---|
| Calicium viride | |
| Scientific classification | |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Caliciales |
| Family: | Caliciaceae |
| Genus: | Calicium Pers. (1794) |
| Type species | |
| Calicium viride Pers. (1794)
| |
Calicium is a genus of leprose lichens. It is in the family Caliciaceae, and has 40 species.
The sexual reproduction structures are a mass of loose ascospores that are enclosed by a cup shaped exciple sitting on top of a tiny stalk, having the appearance of a dressmaker's pin (called a mazaedium), hence the common name pin lichen. They are also commonly called stubble lichens.
They have been used as indicator species for old growth redwood forests.