Lecanora arcuata (Hoffm.) Röhl.
Annotated by G. K. Merrill.
Alaska: Heceta Island, Swift's Cannery.
On rocks, frequent on Dall Island, not seen elsewhere. "2493+2482; 734=2493" [No collection date]. Substrate: saxicolous.
A. S. Foster 2493, [no collection date given]
WTU, Barcode: WTU-L-025878