Blechnum melanocaulon subsp. melanocaulon
Content
Distribution
Asia-Tropical: Borneo present (Sabah present); Philippines (Philippines present); Sulawesi (Sulawesi present), E Highlands present, G. Bonthain, above c. 2000 m present, Mt Kinabalu present, New Ireland present, Pacific: Fiji (Fiji present), Papua New Guinea present
Malesia: Borneo (Sabah: Mt Kinabalu), Philippines over a range of altitudes, Sulawesi (G. Bonthain, above c. 2000 m), Papua New Guinea (E Highlands, New Ireland). Outside Malesia: Fiji.
Notes
1. Specimens of B. melanocaulon subsp. melanocaulon differ from those of subsp. pallens which have pale upper stipe and rhachis and which tend to have a greater number of pinnae and lobes. The stipe and underside of the rhachis of subsp. melanocaulon is usually deeply pigmented but pigmentation rarely extends beyond the rhachis to the costae.
2. Simple fronded forms occur. The medium-sized plants are the most distinctive in that the lower pinnae are suddenly reduced, separate and have no more than two to a few rounded lobes.
2. Simple fronded forms occur. The medium-sized plants are the most distinctive in that the lower pinnae are suddenly reduced, separate and have no more than two to a few rounded lobes.