|I’d Call It That||3.0||0.00||0|
sum(score * weight) /
(total weight + 1)
is the only record I keep from the specimen of that crazy day. My issue is also whether it is crustose or foliose. In principle the suggestion of Lecanora is good. However, I seem to see at the bottom of the photograph some small white rhizines (where one of the lobes is slightly raised).
Unfortunately, this is not unique. I have some more problems like this.
Thanks, Jason, for the help.
I can’t quite decide if it is foliose or crustose.
If foliose: Dirinaria has black underside without any rhizines and lobes shaped like this, but none of the photos I see on-line show the black “leaking” onto the margins on the upper side like this. Hypogymnia does that frequently, but it is much larger and obviously hollow / inflated. It doesn’t look like it has rhizines, which would rule out all other foliose genera, I think. (Looking at the underside would remove all room for doubt here.)
If crustose: I wonder if it’s one of the effigurate Lecanora, related to L. muralis, say. But it’s weird not to see any apothecia on such a well-developed specimen. For that matter, yours doesn’t show any soredia, isidia OR apothecia. Bizarre.