Tritomaria exsectiformis (Breidl.) Schiffn. ssp. arctica Schust.

Alaska: High bluffs along kobuk river 2.5 mi e. of the hunt river mouth. mature white spruce woods on s. facing bluffs along river.
67 10'N, 158 21'W
Rotten wood. + oncophorus wahlenbergii.

M. Lewis s.n., aug. 20, 1976
UBC