Galerina patagonica is a species of agaric fungus in the family Hymenogastraceae. First described by mycologist Rolf Singer in 1953, it has a Gondwanan distribution, and is found in Australia, New Zealand, and Patagonia (South America), where it grows on rotting wood.
The fungus contains a laccase enzyme that has been investigated for possible used in bioremediation of chlorophenol-polluted environments.
The toxicity of Galerina patagonica is unknown. However, it's phylogenetically nested within the Galerina marginata species complex, and thus likely contains deadly amatoxins.