Thelomma mammasum (Hepp.) MassaL.

British Columbia: East sooke park, east sooke, vancouver island. Elev. 0-100 m
48 20 30 N, 123 41 W
On pseudotsuga menziesii. p. menziesii, pinus contorta, blechnum spicant, pachystima myrsinites, with alnus rubra in drainage areas. igneous outcrops.

A. M. Crane s.n., june 12, 1975
With W. J. Noble
UBC

Thelomma mammasum (Hepp.) MassaL.

British Columbia: Retreat cove, galiano island. Elev. 0-2 m
48 56 N, 123 30 W
Abundant on sandstone on sandstone beach.

J. Coursley s.n., may 30, 1974
With W. J. Noble
UBC

Thelomma mammasum (Hepp.) MassaL.

British Columbia: Bay on west side of mayne island, just north of st. john pt. at end of horton bay rd. Elev. 0-2 m
48 49 N, 123 15 W
On sandstone with lecanora rupicola on sandstone beach.

J. Coursley s.n., june 17, 1974
With W. J. Noble
UBC