Irish lichens

Porpidia soredizodes

Order: Lecanorales       Family: Porpidiaceae

Species: Porpidia soredizodes

Growth type crustose
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


Porpidia soredizodes
Porpidia soredizodes April 2012

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