Macowanites Americanus, commonly known as the American Caesar's Mushroom, is a prized edible mushroom known for its delicious taste and medicinal properties. This popular mushroom has numerous synonyms that mushroom enthusiasts can use to ensure its identification. Some of the common synonyms include Amanita subrostrata, Amanita caesarea var. americana, Caesar's Mushroom, Royal Mushroom, Yellow Caesar, and American Caesar. These synonyms reflect the mushroom's similarity to the European Caesar's Mushroom, and its royal status as a prized edible fungi. No matter what name you use, this mushroom is highly sought-after in culinary circles and continues to be a favorite among mushroom aficionados.