Fungus, plural "fungi", is a class of saprophytic parasitical plants which lack chlorophyll and are frequently found in the less hygienic cavities of brogmoids. The fungi in the Great Brogmoid below Zork was so thick that it formed a virtual forest within the ear. Although their dialect is uncomprehensible by the unenchanted human ear, it is known that fungi discuss topics such as the woeful lack of moisture within an ear, or spore-care techniques.

SOURCE(S): Zork Zero