Lecidea

Lecidea is a genus of crustose lichens with a carbon-black ring or outer margin (exciple) around the fruiting body disc (apothecium), usually (or always) found growing on (saxicolous) or in (endolithic) rock.^[2]: 298 Lichens that have such a black exciple are called lecideine, meaning "like Lecidea, even if they are not in this genus.^[2]: 14 Members of the genus are commonly called disk lichens or tile lichens.^[2]: 298

Lecidea
Lecidea fuscoatra
Scientific classification
Domain:	Eukaryota
Kingdom:	Fungi
Division:	Ascomycota
Class:	Lecanoromycetes
Order:	Lecideales
Family:	Lecideaceae
Genus:	Lecidea Ach. (1803)
Type species
Lecidea fuscoatra (L.) Ach. (1803)
Synonyms[1]
Stereonema Kütz. (1836) Sporoacania A.Massal. (1855) Cladopycnidium H.Magn. (1940) Lecideomyces E.A.Thomas ex Cif. & Tomas. (1953) Nothoporpidia Hertel (1984) Zosterodiscus Hertel (1984)

Selected species

Main article: List of Lecidea species

According to the Dictionary of the Fungi (10th edition, 2008), the widespread genus contains an estimated 427 species.^[3]

• Lecidea atrobrunnea
• Lecidea hassei
• Lecidea keimioeensis
• Lecidea laboriosa
• Lecidea lithophila