362 KEY TO THE FERNS OF BORNEO 
50. D . truncata (Poir.) O. K. 
Sarawak, Dutch Borneo, North Borneo. 
Malaya to Madagascar, India, Polynesia and 
Australia. 
51. D. lithophylla Copeh n. Sp. 
Kinabalu. 
Local. 
52. D. megaphylla (Mett.) C. Chr. 
Sarawak, North Borneo. 
Malaya to Africa and India. 
53 - D- arbuscula (Willd.) O. K. 
Sarawak, North Borneo. 
Malaya to the Mascarenes, India and Polynesia. 
54. D. AMBOINENSIS (Willd.) O. K. 
Sarawak. 
Malaya to India. 
55. D. SAG ITT I FOLIA (Bl.) O. K. 
“ Borneo," teste van Alderwerelt. 
Java, Malacca. 
56 . D. pennigera (Forst.) C. Chr. 
Dutch Borneo. 
Philippines to New Zealand. 
57. D. ferox (Bl.) O. K. 
Sarawak. 
Malava. 
j 
58. D. penangiana (Hooker) C. Chr. var. calvescens 
(Christ). 
Sarawak. 
The species, Penang to India and China; the 
variety, Mindanao and Negros. 
59. D. COMPACTA Copeh 
Sarawak. 
Endemic. 
