This research discovered that what was thought to be a single mushroom species in Japan is actually two different species that prefer different climates. The study has important implications for understanding how fungi respond to climate change. Impacts on everyday life: – Helps predict how edible mushroom populations might change with global warming – Improves our ability to identify and manage valuable forest mushroom species – Contributes to understanding how climate change affects forest ecosystems – Demonstrates the importance of precise species identification for conservation – Helps inform forest management practices in changing climates