From Dungeons of Dredmor Wiki

Fungi are one use consumable items that increase various attributes for a period of time. They are frequently found in chests or as drops from Deep Fungus Diggles, or can be grown on dead enemies with Spores from the Fungal Arts skill.

To consume a fungus, place it in your belt or inventory and right-click on it.

Icon	Name	Description	Notes
	Azure Mob-Bonnet	This cool, smooth fungus is just seeping with rich magicks.	+5 +5 for 63 turns. Stacks up to 3 times.
	Fairywodger	Every year, tiny fairies collect these rare, healing fungi in preparation for the event known only as the great Wodger Festival.	Restores 6 instantly and heals 1 for 6 turns. Stacks up to 4 times.
	Fell Truffle	The Fell Truffle is the only mushroom in the world that can leap out of the ground and throttle a truffle-hunting pig.	+1 +2 4 2 for 6 attacks.
	Greedy Blungecap	Known to grow upon and consume boots, often avoided by seasoned adventurers. Excellent with a lemon sauce.	Grants ability to drain lifeforce for 19 rounds. Stacks up to 3 times.
	Grunge Ear	Apart from its better-known toughening effects, this fungus may cause an appreciation for flannel.	Causes Plaid Power which buffs +2 +1 +1 +1 +3 +1 +1 for 60 turns. Stacks up to 3 times.
	Inky Hoglantern	The fruiting body of the Inky Hoglantern only blooms in the middle of the deepest night of the year. Good thing you're finding these in a dungeon.	Buffs Invisibility and -3 for 6 turns. Stacks, but parallel buff timers makes it worse, and just lose more sight radius.
	Lobstermane Fungus	Easily mistaken for true Lobstermane, the Lobstermane fungus is the foundation of a grey-market economy in shoddy culinary substitutes.	Buffs +1 and +1 for 5 hits. Stacks up to 3 times.
	Mud Wen	Grows in muck and often mistaken for its medium.	Causes Unpleasant Poison which debuffs -5 and -2 for 30 turns. No stack Limit, not like you should be eating them anyway.
	Night Cap	This mushroom smells of rich fungal liquor.	Restores 6 instantly and 1 for 8 turns. Stacks up to 3 times.
	Odious Puffball	It's highly puffy and full of confusing spores.	Creates 3 Puffballs (Thrown Weapons that create a cloud of highly confusing toxic spores on impact)
	Plumber's Agaric	This is one of those herbal remedies that people take to try to make themselves bigger.	Buffs +3 for 63 turns. Stacks up to 3 times.
	The Prince	A regal mushroom better feared than loved.	Buffs +12 for 5 hits.