the hairs between veins on the upper surface near margins only on mature plants but ± abundant on young plants;
Asia-Tropical:, Malaya (Peninsular Malaysia present) Peninsular Thailand: present
Peninsular Thailand; Malesia: Peninsular Malaysia.
The type may have been destroyed at Kaliningrad. The original description agrees with the common limestone fern above described and with no other at Batu Caves.
Tectaria keckii, Index Filic.: 181. 1934