 It has been found that ants are not required for "Myrmecodia" to form the caudex, or tuberous inner chambers—they exist naturally in "Myrmecodia" with or without a population of ants.Cavities are found to be randomly but normally distributed within tubers, with no observable pattern or structure.Cavities are connected to the outer surface of the plant by small holes, which are naturally occurring and not created by ants.