Morphius Shadowleaf
Detailed map of the Malpheggi Swamp from the Mystara Message Board posted 25 May 2003.
Malpheggi Swamp from the Mystara Message Board posted 27 February 2004.
Also see
Morphius’s Malpheggi Swamp, 1 mile per hex by Thorfinn Tait, from the Atlas of Mystara current as of 2 March 2025.