Stropharia Hornemannii is a type of mushroom that is commonly found in North America. It is characterized by its purple-brown cap and white stem. However, there are several other names for this species of mushroom, including the "Horneman's Stropharia," the "Lilac Woodtuft," and the "Purply-Gilled Woodtuft." The Stropharia Hornemannii is also known as "Stropharia Semiglobata" and "Stropharia Lilacea." These synonyms are important to know for anyone interested in identifying or studying mushrooms, as they can refer to the same species in various contexts. Regardless of the name, the Stropharia Hornemannii is an interesting and unique addition to any mushroom enthusiast's collection.