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||Imbricate lobes with isotomic dichotomous branching, sometimes perforate at the tips, lobe cavity with white or dark ceiling and dark floor; medulla K-, KC+ orange red, P+ orange red.
||Endemic to eastern North America where it is common in the mountains. Map in Ohlsson (1973): Eastern N Am, Tenn, N. Car, to Quebec and New Brunswick.
||high elevation conifer forest
||Eastern North America