Tree 15 m. Leaves chartaceous or thinly coriaceous, (ovate-)oblong, 15-22 by 6-8.5 cm, base short-cuneate or broadly rounded, apex acute-acuminate, upper surface olivaceous, glabrescent, indumentum minute, greyish, lower surface pale greyish brown, persistent or late glabrescent, hairs interwoven, scale-like, (brown-)grey, 0.1 mm; Inflorescences between the leaves, of the Knema-type:
Asia-Tropical, E Papua New Guinea present, Gara River present, Milne Bay Prov present, Modewa Bay present
Malesia: E Papua New Guinea (Milne Bay Prov., Modewa Bay, Gara River); known only from the type.
Myristica simulans was formerly confused with M. buchneriana that differs in shorter hairs on twig apex and inflorescences, smaller male flowers (5-6 mm long) with shorter hairs, and weaker hairs on the lower leaf surface. In appearance and male flowers the species also looks like M. inopinata, but in that species the synandrium has a distinct, acute, sterile apex, and the androphore a collar of dense hairs at the base.