KEYS TO THE FERNS OF BORNEO 
297 
Families and Genera. 
Number of 
Genera. 
Number of species. 
Matonia and the descendants of its group. 
51. Matonia .. .. 2 
52. Phanerosorus .. .. 1 
53. Dipteris .. .. 4 
54. Cheiropleuria .. .. 1 
55. Platycerium .. .. 3 
56. Acrostichum . . . . I 
Poly podium and its relatives. 
57. Polypodium .. .. 112 
Eupolypodium 
Goniophlebium 
Phymatodes 
Selliguea 
Myrmecophila 
Dryn ariopsis 
58. Prosaptja .. .. 3 
59. Oreogrammitis .. .. I 
60. Loxogramme .. .. 6 
61. Cyclophorus .. .. 9 
62. Drymoglossum . . . . I 
63. Hymenolepis .. .. 2 
64. Elaphoglossum .. .. 3 
65. Lecanopteris .. .. 5 
66. Aglaomorpha .. .. 1 
67. Merinthosorus . . .. I 
68. Drynaria .. .. 4 
69. Photinopteris .. .. I 
The Vittarieae. # 
70. Antrophyum .. .. 11 
71. VITTARIA .. .. II 
72 . SCLEROGLOSSUM .. .. 4 
73. Monogramma .. .. 2 
8 . PARKERIACEyE .. .. i i 
1. Ceratopteris . . .. I 
q . MARSILEACE^E .. .. i i 
1. Marsilea .. .. I 
Total .. 88 697 
