39§ 
KEYS TO THE FERNS OF BORNEO 
Subgenus II. GONIOPHLEBIUM. 
a. Fronds pectinate, segments adnate or 
confluent. 
b. Segments close. 
a. Palese ciliate, harsh 
E. Segments separated (above base) by 
c. Paleae entire, rather soft 
51. P. hr achy podium. 
52. P. coloratum . 
ai. Fronds pinnate, pinnae articulate 
b. Base of pinnae broadly cuneate 
Zm Pinnae truncate or subauriculate 
more than their width 
53. P. proaviium. 
‘ ‘ Shellolepis.” 
54. P. verrucosum. 
55. P. subaunculatmn . 
53. P. BRACHYPODIUM Copel. 13 . sp. 
Kinabalu. 
Local. 
52. P. COLORATUM Copel. 
Sarawak (Mt. Poe.) 
Local. 
This may be P. cesatianum Baker. 
53. P. proavitum Copel. 
Sarawak (Bungo range) 
Local. 
54. P. verrucosum Wall. 
Common. 
Malaya to Australia. 
55. P. SUBAURICULATUM Bl. 
Dutch Borneo, Kinabalu (probably common). 
Malaya to Polynesia. 
Subgenus III. PHYMATODES. 
a. Fronds simple, entire or nearly so, thick, 
venation practically invisible without 
treatment. 
b. Fronds dimorphous, sori over whole frond 59. P. Wrayi. 
Z>i. Fronds somewhat dimorphous, sori 
restricted to a modified apex. 
c. Fertile apex entire 58. P. accedens. 
c*. Fertile apex wavy or crenate 61. P. stenopteris. 
Z/2. Fronds uniform, sori on the unmodified 
frond. 
