Asia-Tropical: Philippines (Philippines present), Leyte present, Panay present, Samar present, southern Luzon present
Malesia: Philippines (Southern Luzon, Leyte, Samar, Panay).
A collection in which fertile fronds have a quite distinct wing joining the bases of successive lobes was made type of a separate species T. primitivum by Copeland. Deeply lobed sterile fronds, lobes subentire, 4 mm wide, may occur and bear an occasional sorus on an outer vein of a single row of areoles. A plant from Panay cultivated at Kew produced fronds showing a range of forms between sterile and fertile. One frond 5 cm wide, shallowly lobed throughout, produced irregularly arranged sori near the margin, some terminal on short free veins and some on veins surrounding areoles.