Lomagramma sinuata
Content
Distribution
Asia-Tropical: Borneo present; Jawa (Jawa present); Lesser Sunda Is. (Bali present); Maluku (Maluku present); New Guinea present; Sulawesi (Sulawesi present), Batjan present, Lesser Sunda Is present, S. Sumatra present, Solomon Is present
Malesia: S. Sumatra, Java, Lesser Sunda Is. (Bali), Borneo, Celebes, Moluccas (Batjan), New Guinea; Solomon Is.
Notes
The type, and some other specimens from Celebes and Java, have pinna-stalks 5 mm or more long, narrowly winged on the acroscopic side (). Most specimens from Java and New Guinea have pinnae almost sessile but do not differ significantly in other ways, though some in New Guinea (f. papuana, ) are more rounded basiscopically.
In 1937 (l.c., p. 219) I thought that most specimens now ascribed to this species from Java probably represented a distinct species, but the specimens in the Bogor herbarium on which I based this opinion did not include sterile acrophylls from fully mature plants nor fertile fronds. In the Rijksherbarium at Leiden are excellent specimens of large sterile acrophylls with quite entire pinnae 3 cm wide, and fertile fronds with pinnae 6-7 mm wide; these are indistinguishable from typical L. sinuata except that the sterile pinnae are shorter- stalked. Bathyphylls from West Java have more deeply crenate pinnae with a more acute apex than pinnae of fronds of a comparable size attributed to L. sinuata in East Java; this may be due to environmental factors. The species is probably now rare in Java owing to destruetion of lowland forest.
In 1937 (l.c., p. 219) I thought that most specimens now ascribed to this species from Java probably represented a distinct species, but the specimens in the Bogor herbarium on which I based this opinion did not include sterile acrophylls from fully mature plants nor fertile fronds. In the Rijksherbarium at Leiden are excellent specimens of large sterile acrophylls with quite entire pinnae 3 cm wide, and fertile fronds with pinnae 6-7 mm wide; these are indistinguishable from typical L. sinuata except that the sterile pinnae are shorter- stalked. Bathyphylls from West Java have more deeply crenate pinnae with a more acute apex than pinnae of fronds of a comparable size attributed to L. sinuata in East Java; this may be due to environmental factors. The species is probably now rare in Java owing to destruetion of lowland forest.