Nothofagus pumilio
(Poepp. & Endl.) Krasser
LPS 39590. Place of collection: Argentina; Tierra del Fuego; Río Grande; Lago Yehuín. Date of collection: 12 February 1972. Associated organisms: Ascocoryne sarcoides; Nothofagus betuloides. Collector: Gamundí de Amos, I.J..