KEYS TO THE FERNS OF BORNEO 
361 
39. D. HETEROCARPA (Bl.) O.K. 
Sarawak, Dutch Borneo. 
Malaya, Hongkong. 
40. D. his pi difolia v. A. v. R. 
Dutch Borneo. 
Endemic. 
41. D. STIPELLATA (Bl.) O.K. 
Kinabalu. 
Malaya. 
42. D. pteroides (Retz.) O.K. 
Dutch Borneo, North Borneo. 
Malaya to Burma, China, Polynesia and Australia. 
43. D. qongylodes (Schkuhr) O.K. 
Common. 
* 
Palaeotropical. 
44. D. Toppingii Copel. n. sp. 
Kinabalu. 
Local. 
45. D. prolifera (Retz.) C. Chr. 
Dutch Borneo. 
Tropics and subtropics of Old World. 
46. D. haenkeana (Pr.) O. K. 
Sarawak, Dutch Borneo, North Borneo. 
Malaya to Polynesia. 
47. D. unita (L.) O. K. 
D. cucullata (Bl.) Christ. 
Common. 
Malaya to the Mascarenes, India and Polynesia. 
48. D. arida (Don) O. K. 
Dutch Borneo, North Borneo. 
Malaya to India. 
49. D. PORPHYRICOLA Copel. 
Sarawak (Bau). 
Local. 
