The myconid (fungus man) appeared in second edition in the Monstrous Compendium Volume Two (1989), and reprinted in the Monstrous Manual (1993).
Dungeons & Dragons 3.0 and 3.5 edition (2000-2007)
The junior worker myconid, the average worker myconid, the elder worker myconid, the myconid guard, the myconid circle leader, and the myconid king appeared in Dragon issue #292 (February 2002), and the third edition Monster Manual II (2002). The myconid venom spore appeared in the adventure Expedition to Undermountain (2007).
The myconid rotpriest, myconid sovereign, and myconid guard appears in the fourth edition Monster Manual 2 (2008), also the myconid gas spore and myconid colony swarm appeared in the Underdark supplement (2010).
Myconids appear prominently in the main Monster Manual for the first time in the 5th Edition Monster Manual, including the Myconid Sprout, the Myconid Adult and the Myconid Sovereign, as well as a sample Quaggoth Spore Servant.
Hostile myconids appear as enemies in the computer games Icewind Dale and Baldur's Gate II: Shadows of Amn. Populating the caves of the Dragon's Eye and under Athkatla respectively, they regularly attempt to confuse the player's party members before attacking them with strong melee attacks.