Order: Lecanorales Family: Porpidiaceae
Species: Porpidia soredizodes
Photos: On upland rocks, Ballingeary, Co. Cork, SW Ireland.
Thin thallus forming small grey or creamy-grey patches surrounded by a black prothallus. Round or irregular soralia with greyish-white or greyish, farinose or granular soredia. Apothecia are rare.
It is probably the sorediate counterpart of Porpidia crustulata.
Soralia K+ yellow, C-, P+ orange
Occurs on siliceous rocks, gravestones and pebbles.
Similar: Porpidia tuberculosa. Chemical results negative
Porpidia soredizodes April 2012