Sphenomeris retusa
Content
Distribution
Admiralty Is present, Ambon present, Asia-Tropical: Maluku (Maluku present); New Guinea present; Philippines (Philippines present); Sulawesi (Sulawesi present), Bismarck Arch present, Ceram present, Halmahera present, Morotai present, New Hebrides present, Solomon Is present, Tidore present
Malesia: Celebes, Philippines (almost throughout), Moluccas (Morotai, Halmahera, Tidore, Ambon, Ceram), New Guinea, Admiralty Is., Bismarck Arch.; Solomon Is.,?New Hebrides.
Notes
A quadripinnate form with narrower pinnules and shorter sori, as described above, has been collected several times in New Guinea and also in Manus. It is not sharply distinct from the broader, less dissected form. Its status is uncertain; one specimen had an irregular meiosis (Walker, pers. comm.) and proved to have abortive spores; it is almost certainly a hybrid (with S. chinensisl), but this is scarcely the case with all.