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Light grey lichen with dark soredia

Observed: 24th September 2012 By: pf339
S159 Neighbourhood Nature - course complete
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Light grey lichen with dark soredia
Description:

Light grey, crustose thallus with lots of cracks growing on angled ledge of siliceous sandstone church wall. Dark prothallus visible around some of the perimeter. Small spots and larger patches of dark soredia on surface of thallus. Possibly Porpidia tuberculosa.

Identifications

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Some fungi are very poisonous so a mistaken ID could have serious consequences.

Species interactions

No interactions present.