Fuscoboletinus Serotinus is the scientific name for a mushroom commonly known as the "late fall bolete". However, there are a few other synonyms that can be used to refer to this mushroom. One common synonym is Boletus gephyreus, which is derived from the Greek word "gephyreus" meaning "deep yellow". Another synonym is Xerocomellus serotinus, which accurately reflects the mushroom's late appearance in the fall season. The English name "snappy stembell" is also sometimes used to describe this mushroom, presumably due to the mushroom's tendency to break cleanly away from its stem when picked. Overall, Fuscoboletinus Serotinus is just one of several names that can be used to refer to this tasty and distinctive mushroom.