What do you think of this Journal Article?
My observation: https://www.ispotnature.org/communities/southern-africa/view/observation/704697/twisted-foliose-lichen-knersvlakte-2012
and the FULL TEXT of New species of the lichen genus Xanthoparmelia from southern Africa (Ascomycotina: Parmeliaceae)  Hale, M.E.
article on line.
See Fig 15 - do you think they match?
Hopefully we should be able to match others