Calicium viride

Calicium viride
Scientific classification
Domain:	Eukaryota
Kingdom:	Fungi
Division:	Ascomycota
Class:	Lecanoromycetes
Order:	Caliciales
Family:	Caliciaceae
Genus:	Calicium
Species:	C. viride
Binomial name
Calicium viride Pers. (1794)
Synonyms[1]
List Lichen lygodes Ach. (1799) Coniocybe stemonea b viride (Pers.) Rabenh. (1870) Calicium hyperellum f. viride (Pers.) Cromb. (1894) Chaenotheca stemonea f. viridis (Pers.) Zahlbr. (1922) Lichen hyperellus Ach. (1799) Calicium hyperellum (Ach.) Ach. (1803) Phacotrum hyperellum (Ach.) Gray (1821) Calicium viride f. hyperellum (Ach.) Vain. (1927) Calicium lygodes (Ach.) Ach. (1803) Calicium hyperellum var. lygodes (Ach.) Ach. (1808) Calicium hyperellum f. lygodes (Ach.) Branth (1868) Calicium baliolum Ach. (1803) Calicium hyperellum var. baliolum (Ach.) Wahlenb. (1812) Calicium hyperellum f. baliolum (Ach.) Ach. (1814) Calicium viride var. baliolum (Ach.) Oxner (1956) Calicium viride f. leprosa Nádv. (1940)

Calicium viride, commonly known as the green stubble lichen, is a species of pin lichen in the family Caliciaceae, and the type species of the genus Calicium. It is a common and widely distributed species in temperate areas of the Northern Hemisphere and southern South America. The thallus of the lichen consists of a basal crust, and apothecia (fruiting bodies) on a stalk. Diagnostic characteristics of Calicium viride are its brown excipulum (the ring of tissue around its apothecia), and its green, granular crust.