Asia-Tropical:, Maluku (Maluku present); New Guinea present Pacific: present, Samoa (Samoa present) Seram: present Solomon Is: present Vanuatu: present
Malesia: Moluccas (Seram), New Guinea. In the PacificVanuatu, Solomon Is., Samoa.
This species is sometimes very similar to M. rubidum, but differs in the rhizome anatomy with many sclerenchyma strands. It also resembles M. sibomense, from which it differs in the rhizome scales and the generally larger fronds with more pinnae.
Microsorum powellii, Gen. Fil.: 196. 1947