Swedish researchers isolated 17 strains of wild edible mushroom-forming fungi from nature and studied how they grow at different temperatures and develop fruiting bodies. They found that commercially cultivated mushroom species grow faster and prefer warmer temperatures than wild species. Several strains successfully produced mushrooms on different growing substrates, particularly on birch pellets, with some performing better than established laboratory strains. All newly isolated strains have been preserved in a research collection for future studies and potential commercial mushroom production.