Growing on branches of Sorbus americana.
Identified by Scott LaGreca, lichenologist at Duke University. Thanks to Scott for bringing me to this site.
pale green on tree bark, lobes up to 15 mm, cortex C- K+ yellow KC hints of red UV+, medulla white C- K- (5th photo shows reaction to KOH, 6th to KC)
Male abroad near well on SW corner of backyard. 330 grams total weight. Red eyes. Moved north after release.
Found dead in garage.