Asia-Tropical: Philippines (Philippines present), Luzon present
Malesia: Philippines (Luzon), only known from the type.
Under the same number and near the same locality Mr Price also collected very much smaller plants with lamina to 7 cm long, pinnae 2 pairs, 1 cm long, subentire, but fully fertile. These small plants (separated as n. 2720B) agree in sori and in pubescence with the larger ones above described. They agree also closely in all respects with Dryopteris diminuta Copel. from Mindanao, which I have transferred to Pronephrium. Mr Price calls my attention to the plants described by Copeland as Dryopteris bakeri in ; one of them had much larger pinnae than the rest. It is thus possible that the whole collection 2720 represents different stages of plants on one species.