Introduction : the increasing demand for functional foods -- The numbers behind mushrooms biodiversity -- The nutritional benefits of mushrooms -- The wide range of bioactive properties of mushrooms -- The use of mushrooms in the development of functional foods, drugs or nutraceuticals -- The consumption of wild edible plants -- Wild greens as source of nutritive and bioactive compounds over the world -- Nutrients and bioactive compounds in wild fruits through different continents -- Wild plant-based functional foods, drugs or nutraceuticals -- Nuts : agricultural and economic importance worldwide -- Recent advances in the biological properties of nuts -- The interest of nuts as sources of nutrients -- The contribution of chestnuts to the design and development of functional foods -- Emerging functional foods derived from almonds.