Type what you think it is, in any language the game speaks: Fly Agaric and Fliegenpilz both count, and so does the scientific name. Two hints are available and each one costs you a point. The run ends when you say so, and it leaves your daily streak alone. Use the gear in the corner to deal from one continent instead of all 147 species.
This is a game, not a field guide. Never use it to decide whether a wild mushroom is safe to eat. Ask a qualified local expert.