Dirina massiliensis f sorediata Roccellaceae
Dirina massiliensis f. sorediata

Chemistry: Cortex K-, C+ rose-red. Medulla UV+ usually bluish-white

Can be common on vertical calcareous rocks and walls, often found on N and E church walls.

Thick, whitish-grey, areolate thallus with brown prothallus. Surface +/- covered with granular soredia which can completely cover thallus. Fresh thallii scratching orange. Never fertile.
Dirina massiliensis f. massiliensis is the fertile form, the medulla usually UV+ yellow and soredia absent, very rare on hard coastal limestone.
Can be host to Lecanographa grumulosa, Spiloma auratum and Milospium graphideorum.

Sometimes occurs with Llimonaea sorediata


Dirina massiliensis f sorediata


Dirina massiliensis f sorediata
Dirina massiliensis f sorediata
Holy Rood church, Wool, Dorset. September 2012

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