pf339's picture

Brown lichen

Observed: 20th June 2013 By: pf339
S159 Neighbourhood Nature - course complete
pf339’s reputation in Fungi and Lichenspf339’s reputation in Fungi and Lichenspf339’s reputation in Fungi and Lichenspf339’s reputation in Fungi and Lichens
Brown lichen i
Brown lichen ii
Brown lichen iii

Lichen with brown areolate thallus growing in extensive patches on the quartz sandstone coping-stones on the brick walls of a bridge (third picture). Black lecideine apothecia with pruinose discs and pruinose margins. Whitish-cream patches (possibly soredia) on edges of some areoles (especially first picture and right hand side of second picture). Seems unlikely but possibly Porpidia melinodes.


Caution: Do NOT use iSpot to identify fungi to eat!

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

Species interactions

No interactions present.


synan's picture

How odd

My immediate thought was Lecidea fuscoatra or similar... then I saw the soralia you mention. I can see why you have arrived at Porpidia melinodes.


pf339's picture


Thanks for message. I am gradually getting more sense of how widely an individual species can vary in appearance. The possible identities of this and some other lichens found at the same lowland location were based on large scale appearances only so they are unlikely possibilities. Assume they are variations of more likely lichens but their appearances were still interestingly different to see.