Following an interesting talk on Trapelia's on a Zoom lichen meeting I looked again at old photos (Ireland 2009) that I'd identified as Trapelia glebulosa and wondered if the two below are Trapelia involuta instead?
Trapelia involuta?
Re: Trapelia involuta?
Areoles are lobed and isolated, so Trapelia involuta is possible if this species really exists...
Alain
Alain