Distribution
Asia-Tropical: Borneo present (Kalimantan present, Sarawak present); Malaya (Peninsular Malaysia present), Natuna Is present, Perak present
Malesia: Malay Peninsula (Perak, Natuna Is.), Borneo (Sarawak, Kalimantan).
Morphology
There is much variation in width of lobes and pinnae and of the rachis-wing in different specimens. Buds at the bases of lateral lobes (of trilobed fronds) or pinnae occur on the types of A. tricuspe Bedd. and T. clemensiae Copel.
Citation
Alderw. 1908: Malayan Ferns: 241
Alderw. 1908: Malayan Ferns: 235
