Cyrodiil is home to many different species of mushrooms and fungi, all having unique properties. They can be found abundantly throughout the many cave systems and underground locations of Cyrodiil. Some species prefer growing on decaying wood or dying tree roots above ground. They are excellent alchemy ingredients used for the creation of potions and are generally fairly easy to find.

The following have been found throughout Cyrodiil:

• Bog Beacon Asco
• Cairn Bolete
• Cinnabar Polypore
• Clouded Funnel Cap
• Dryad's Saddle Polypore
• Elf Cup
• Emetic Russula
• Fly Amanita
• Green Stain Cup
• Steel-Blue Entoloma
• Summer Bolete
• Stinkhorn
• Wisp Stalk

The following have been found on the Shivering Isles:

• Fungus Stalk
• Mushroom Tree Sapling (Dementia)
• Mushroom Tree Sapling (Mania)
• Mushroom Tree (Dementia)
• Mushroom Tree (Mania)