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Common names for B. edulis vary by region. The standard Italian name porcino means "piglet" in Italian, and echoes the term suilli, literally "hog mushrooms", used by the Ancient Romans, and still surviving in Southern Italian words for this mushroom. The derivation has been ascribed to the resemblance of young fruit bodies to piglets, or to the fondness pigs have for eating them. It is also known as "king bolete".
The English penny bun refers to its rounded brownish shape. The German name Steinpilz "stone mushroom" is derived from the firm flesh. In Austria, it is called Herrenpilz, the "gentlemen's mushroom", while in Mexico, the Spanish name is panza, meaning "belly".