Xanthoria

Who knew trying to identify lichens was such a minefield - there are tons of them! Could the grey spiky one (yes that's what I put into google) be Sea ivory (Ramalina siliquosa). Phil's Ecology website seems to think it is - it's half fungi and half alage, sheep like it; and the yellow might be yellow xanthoria, definitely a lichen. I hoped one of them might end with an r for today's Tiny Tuesday challenge but sadly not. Oh wait - Xanthoria! Result.