Hmmm.
I agree about the
Solenopsora vulturiensis.
One has to wonder if the main lichen is the same as what I have already said is
Squamarina cartilaginea. In fact I wonder, Jenny, if this is your gentle, diplomatic query as to whether I am certain about the
Squamarina?
I have to admit that I have never seen
Solenopsora holophaea and didn't think of it when I answered your other thread. Also, the maritime habitat supports
S. holophaea, and in suggesting
Squamarina I was assuming your rock must be basic, though it has a coastal tendency anyway.
In view of the radiating, imbricated lobes and the general look of the apothecia, I was going to stand by my
Squamarina suggestion, though with reduced confidence, but after finding the page on
Solenopsora holophaea here and seeing how like
Squamarina it can be, I now think I was wrong. One interesting feature shared by your photograph of the "
Squamarina" and this Azores photograph of
S. holophaea is that the thallus surface is studded by black pycnidia.
I hate to admit it, but I now think the lichen in the other thread indeed is
S. holophaea.
Now is the one in this thread the same? I am not sure, but it seems very possible. I certainly (I hope) would not have suggested this one is
Squamarina. But something else is nagging at the back of my mind and I may come back to this.
Alan