Cwm Idwal Lichen

[black]

Here's a few of the lichens I photographed at the mountainous upland of Cwm Idwal, Wales. If AlanS or anyone else could assist in ID I'd appreciate it. Thanks

[Fungalpunk]

RHIZOCARPON GEOGRAPHICUM looks good for the first and the second seems like TREMOLECHIA ATRATA. The third one I have no idea.

Cheers

Fungalpunk Dave

[AlanS]

Yes, number one is Rhizocarpon geographicum, and a very good photograph of it.

It is a variable species which perhaps might be subdivided in the future, but this looks like true subsp. geographicum - generally our common variant.

Number two is also, I think, a Rhizocarpon species. I fancy it is R. reductum (formerly R. obscuratum), but there are numerous other species in this difficult genus and I cannot claim a working knowledge of them yet. Cwm Idwal could easily have some of the less common species.
It is not Tremolechia atrata, which has more regular, concave, marginate apothecia and a uniformly rust coloured thallus. In the photograph we see here, the rust tints are from deposition of iron oxides, which happens in many of the white or grey crustose species and is of no aid in identification.

Number 3 might be yet another Rhizocarpon, but I cannot be at all definite and offer no suggestion as to species.

Alan

[black]

Thanks Alan S and Fungal Punk. There was masses of lichen on the rocks around Cwm Idwal would be well worth checking out if you're ever in the area.