unknown lichen

[Adam Cheeseman]

Hi all,

Can anyone ID this please?



Cheers,

Adam

[fairplay]

You don't tell us much, so this is just a wild guess - Amandinia punctata.

A simple chemical test you could try is to add a tiny drop of un-scented domestic bleach. If there is no change of colour to red or orange (which quickly fades away) then it narrows down this species.

Lichens are not really my field of expertise, but I hope this is of help.

Neil.

[Kayleigh]

It looks like dried up frog spawn

[Fungus Ken]

I haven't checked but I think Amandinia punctata is a species that mainly grows on wood.

Porpidia springs to mind, maybe Porpidia macrocarpa, but there isn't a lot to go on and I'm just dashing out for the evening, so that's my best shot.

Ken

[ladyhawk]

Aspicilia calcarea or Lecanora calcarea just a guess mind

[Adam Cheeseman]

Sorry. It's on an Ash trunk in Ashford, southwest London. Quite common on all the Ash trees in the area.

Cheers,

Adam

[Fungus Ken]

Originally Posted by Adam Cheeseman

It's on an Ash... Quite common on all the Ash trees in the area.

Ah, that makes a difference. In which case I'd say Lecidella elaeochroma is a good possibility. Often grows in mosaics with Lecanora chlarotera on smooth barked trees.

Ken

[Adam Cheeseman]

Thanks Ken. I'll have a read up a get my gear out to pin it down.

Cheers,

Adam

[ladyhawk]

going to have another go at this one, Diplotomma alboatrum grows on ash and is very simular to your photo, well its a maybe.