Entoloma Sinuatum, commonly known as the "Deadly Fibrecap," is a poisonous mushroom that can cause severe stomach upsets when ingested. It's essential to exercise caution when dealing with this species to avoid fatal consequences. There are several synonyms for Entoloma Sinuatum, including Clitocybe sinuata, Rhodophyllus sinuatus, and Entoloma rhodopolium, among others. These synonyms are often used interchangeably to refer to this poisonous mushroom species. It's essential to learn about the characteristics of these synonyms to help identify this dangerous mushroom species and prevent accidental consumption. Though this mushroom may be beautiful with its pinkish cap, it is best kept as a sight rather than a delicacy.