Even more Scilly Lichens

[Tiggrx]

Sorry if you are getting fed up of me but here are a few more lichens from Scilly for ID if possible

I think this is a Ramalina - looks rather like R. siliquosa but growing on willow in a wet woodland site, so presumably a different species.


Presumably another Ramalina. This time on coastal rocks, but I don't think it's R. siliquosa


Not idea on this one. Can't quite remember the habitat, but the other lichens in the picture suggest upper shore (I think...)


Again, no idea. This was on exposed coastal rocks


Not sure if this is the same as the last or different.


Thanks for any help or suggestions.

Aaron

[JennyS]

Its great to see your photos though trying to put names to someone else's is even more daunting than trying to ID my own, anyway here goes ......

1. Ramalina farinacea
2. Ramalina but I've not come across one looking like this
3. Got folders full of these and similar (marked probably best to ignore!)
4 and 5 are both Parmelia species, 4 is probably P. saxatalis, 5 could be P. omphalodes but that's only a maybe....

[AlanS]

Hi again Aaron,

As usual I pretty much agree with Jenny.

1. Ramalina farinacea.

2. The thallus lobes are very distorted/malformed and with the surface covered with ulcer-like warts (that, rightly or wrongly, I believe to be multiple would-be apothecia that don't develop further). There is one Ramalina that commonly does this. It is ... guess what ... R. siliquosa!

3. No idea either, but you appear to have Lecanora gangaleoides (black apothecia) bottom right. (Tephromela atra looks near-identical in photographs but there seem to be some yellow marks that are suggestive of the lower medulla colour of the Lecanora showing through).

4. There is a smooth, grey, foliose lichen with black marginal cilia, most probably Parmotrema perlatum, mixed up with the main subject and confusing matters a bit. Ignoring this, I would say Parmelia omphalodes, but I cannot rule out Jenny's suggestion.

5. Again, P. omphalodes. And as I keep disqualifying your attempts to add a different Ramalina, you may like to know that that ivory-coloured spike with black, dot-like pycnidia, top right, is surely Ramalina cuspidata!

Alan

[JennyS]

There is a smooth, grey, foliose lichen with black marginal cilia, most probably Parmotrema perlatum, mixed up with the main subject and confusing matters a bit. Ignoring this, I would say Parmelia omphalodes, but I cannot rule out Jenny's suggestion.

I can!
I've got so used to over-ruling my own hopeful mis-identifications of browner P. saxatalis as P. omphalodes that I think I automatically did the same with this one .... and I missed the Parmotrema

[Tiggrx]

Thanks again to both of you - my pile of unID's pictures is slowly reducing. I still have quite a number that could potentially be Ramalina siliquosa...