334 
KEYS TO THE FERNS OF BORNEO 
5. P. SEMIPINNATA L. 
North Borneo. 
Malaya to Japan. 
6. P. GREVILLEANA Wall. 
Sarawak, Dutch Borneo, North Borneo. 
To India. Philippines (?). 
7. P. LIGULATA Gaud. 
“ Borneo.” 
Moluccas, New Guinea. 
Included on the authority of Christensen’s Index. 
8. P. LONGIPINNULA Wall. 
Sarawak. 
Range doubtful, supposed to be extensive. 
9. P. asperula J. Sm. 
Dutch Borneo, (determined by Christ). 
Known only in Luzon. 
10. P. quadriaurita Retz. incl. P. nemoralis Willd. 
Common. 
True P. quadriaurita probably occurs only in and 
near Ceylon. 
This species has been construed as including very 
numerous more or less distinct forms and species, so that 
one cannot know from its citation what fern is meant. 
11. P. Clemensee Copel. n. sp. 
Kinabalu. 
Local. 
12. P. T oppingii Copel. n. sp. 
Kinabalu. 
Local. 
13. P. DECUSSATA J. Sm. 
P.furcans Hooker. 
Sarawak, North Borneo. 
Malaya to Ceylon and Polynesia. 
14. P. furcans Baker. 
Sarawak, Dutch Borneo. 
Endemic. 
15. P. Walkeri Baker. 
North Borneo (Banggi island). 
Local. 
