Asia-Tropical: New Guinea present; Sulawesi (Sulawesi present), East Malesia present, New Caledonia present
New Caledonia, East Malesia: New Guinea, Celebes, at 1800-3000 m.
The type of N. maegregorii BAK. is a poor specimen with basal pinnae lacking; it agrees well with other specimens in pubescence. Some specimens from both east and west New Guinea have a few glands on lower surface of costae, others agree with the type in having none. All Celebes specimens have some short hairs between veins on both sides.