Dungeon Rot Spores of Vergalid  

 

Been here for a few weeks and the only mob to drop these are the "a spawn of Vergalid".

https://everquest.allakhazam.com/db/npc.html?id=23437

Deep in the keyed area. They are the PH for Har'Lak. The good news is that they spawn the Dungeon Rot Infected quite frequently. At least 50 percent of the time.