KEYS TO THE FERNS OF BORNEO 
393 
1. P. bisulcatum Hooker. 
Sarawak. 
Endemic. 
2. P. SETACEUM Copel. 
Sarawak (Tringos). 
Local. 
3. P. VITTARII FOLIUM C. Chr. 
Sarawak, North Borneo. 
Endemic. 
4. P. MALAICUM V. A. V. R. 
P. sessilifolium Hooker. 
Sarawak, North Borneo. 
Malaya. 
5. P. Maxwell 11 Baker. 
Sarawak. 
Endemic. 
Probably only a form of the preceding, as Hose 
notes; P. Maxwellii is then the valid name. 
6. P. KINABALUENSE Copel. n. Sp. 
Kinabalu. 
Local. 
7. P. flabellivenium Baker. 
Sarawak, North Borneo. 
Endemic. 
8 . P. fasciatum (Bl.) Presl. 
Kinabalu. 
Malaya. 
9. P. sparsipilum Copel. 
Dutch Borneo (Bengkarum). 
Local. 
10. P. hirtellum Bl. 
Reported from Mts. Penrissen and Kinabalu, prob¬ 
ably in error. 
Java; further distribution doubtful. 
