Boletus frostii (now widely known as Exsudoporus frostii or Butyriboletus frostii ) is a striking, blood-red mushroom famously nicknamed the , Apple Bolete , or Candy Apple Bolete . It is easily recognized by its vibrant colors and unusual physiological features, such as "bleeding" amber droplets and rapid blue bruising. Key Identification Features
Deep red to crimson, ranging from 5 to 15 cm in diameter. The surface is sticky or "viscid" when moist and can appear shiny or cracked like dried mud when old.
Instead of gills, it has red pores that often "weep" golden or amber-colored droplets when young—a process called guttation.