383 
KEYS TO THE FERNS OF BORNEO 
« 
8. A. concolor Hooker. 
Dutch Borneo, British North Borneo. 
Sumatra, Java, Celebes. 
9. A. trifoliatem Copel. 
A . prolificans v. A. v. R. 
Sarawak, boundary between British North Borneo 
and Dutch Borneo. 
Endemic. 
10. A. subaquatile Cesati. 
Sarawak, Dutch Borneo to the British North 
Borneo line. 
Endemic. 
11. A. cheilosorum Kze ; 
A. heterocarpum Wall.; Hook. 
“ Borneo.” 
India, China, Formosa, Philippines. 
12. A. NORMALE Don. 
Sarawak, British North Borneo, Dutch Borneo. 
India and China to Africa and Celebes. 
13. A. UNILATERALE Lam. 
Sarawak, British North Borneo. 
Paleotropic and to Japan. 
14. A. BORNEENSE Hook. 
Sarawak, British North Borneo, Dutch Borneo. 
Malacca. 
15. A. pellucidum Lam. 
Common. 
Madagascar to Polynesia. 
16. A. FULIGINOSUM Hook. 
Kinabalu. 
Local. 
1 7. A. LONGISSIMUM Bl. 
Sarawak, Dutch Borneo. 
India, Mauritius, Sumatra, Java, Mindanao. 
