Boletaceae is a family of fungi commonly known as boletes. These mushrooms are characterized by their thick, fleshy caps and a spongy layer of pores underneath instead of gills. They are often found in forests, forming symbiotic relationships with trees, which helps both the fungi and the plants to absorb nutrients from the soil. Many species within the Boletaceae family are edible, while others can be toxic. The most well-known member is the porcini mushroom, prized for its culinary uses. Boletes can vary in color and size, making them a diverse group within the fungal kingdom.