There is one historic record of Bibbya ruginosa (formerly Toninia ruginosa) in Minnesota, collected all the way back in 1902 from Grand Marais, I would assume at Artist's Point. John let me know that it is a species that he is interested in finding on the North Shore, so this past weekend I started my search for it. Based on that I would assume that it is rather rare; however, few observations doesn't always mean rare, and I would also assume that it would be present in other similar habitats.
It may still be present at Artist's Point, but being how degraded that habitat has become and with it being quite a ways to get there, I started my search at Wolf Ridge's Lake Superior Site. I don't think I found the species I was looking for (although I might have), but I found a lot of cool lichens, some rare and some common.
Psora globifera is rather common, at least on the shoreline
False Russell's fishscale lichen (Psora pseudorussellii) is quite rare on the North Shore,
I believe this is the only documented population of it here
Blue-edged scale lichen (Psorula rufonigra) growing symbiotically
with rock hairball lichen (Spilonema revertens)
A drastic color change when wet
Blue blister lichen (Toninia sedifolia) also grows symbiotically with rock hairball lichen
Pisutiella grimmiae growing symbiotically with common goldspeck lichen (Candelariella vitellina)
I also saw some galls on my walk down the path.
Epiblema desertana on goldtop
Goldtop leaf gall midge (Asteromyia euthamiae)
Pachypappa sacculi
I also stopped at Sugarloaf Cove to sit and watch the waves and continue the search.
Likely Arthrorhaphis grisea, a very rare (or underreported lichenicolous fungi in N.A.) growing symbiotically with brown beret lichen (Baeomyces rufus)
A lichen that to me looks somewhat similar to Bibbya ruginosa,
but will need to be looked at more closely to see
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