5 - 6 lichen species, ID help please

[poschiavanus]

Originally Posted by AlanS

CORRECTION

Just too late (by about 5 minutes to edit my previous reply).

The penny has dropped re photograph 6.

It is not Cetrelia.

It is Pleurosticta acetabulum, which is precisely this colour when damp - very good match to 'Wirth' (key German book) volume 2, page 638.

A good find of what is now a rare and decreasing species.

Alan

Seward in Crawley "Flora of Berkshire" gives:

Pleurosticta acetabulum (Neck.) Elix & Lumbsch Occasional, on well-lit, nutrient-enriched bark of deciduous trees. [37], [47], [40], [57], [58], [59], [78]

Thatcham Reed-beds are on the edge of SU56.

[Monkey Orchid]

Thanks once again, folks, for all your input.

I shall try to get some better photos next time I go out, of substrates as well as the lichens themselves.