Buellia ambigua (Ach.) Malme
[= Diplotomma ambiguum]

British Columbia: Queen charlotte is. skidegate inlet: robbers island just off the east end of maud is. cretaceous sandstone and shale outcrops and trees on the tiny grassy island.
53 13' N, 132 02' W
On rock wall at edge of beach. Dupl. tlc: norstictic & connorstictic.

I M Brodo s.n., july 10, 1967
With M. J. Shchepanek
UBC