The thelmallow was a flowering plant that grew as floating blossoms in swamps and marshes. The plant produced large, ragged white flowers, which were usually inhabited by swamp flies. The plant's only known use was as an ingredient in spellslayer wine.[1]


  1. Ed Greenwood (October, 2011). “Eye on the Realms: Spellslayer Wine”. In Steve Winter ed. Dungeon #195 (Wizards of the Coast), pp. 36–38.