Abrothallus secedens Wedin & R. Sant.

IMI 364403. Place of collection: Argentina; Tierra del Fuego; Ushuaia; Ushuaia, ca 4 km to northwest; Martial glacier, below upper end station of chairlift (S54°47' W68°23', alt. 0550 m). Date of collection: 6 January 1989. Associated organisms: Nothofagus antarctica (trunk); Nothofagus pumilio (trunk); Pseudocyphellaria dubia. Collector: Wedin, M.. Identifier: Hawksworth, D.L..