KEYS TO THE FERNS OF BORNEO 
329 
8. T/ENITIS Willdenow. 
xi. Fronds simple, decidedly dimorphous 
b. Fronds simple, not very unlike. 
61. Fronds obtuse. 
1. 2\ rigida. 
c. Margin sharp 
2. T. drymoglossoides. 
3. T. obtusa. 
4. T. Broohsii. 
5. T. biechnoides. 
a. Margin thickened 
b ~. Fronds acute 
a 1. Frond pinnate 
i. T. rigida (Hooker) comb. nova. 
Dvymoglossum rigidum Hooker. leones PI. 10 (1854) 
96. 
Sarawak. 
Local. 
2. T. DRYMOGLOSSOIDES Copel. 
Sarawak (Bungo range.). 
Local. 
3. T. obtusa Hooker. 
Sarawak. 
Local. 
4. T. Brooksii Copel. 
Sarawak (Bungo range). 
Local. 
It is likely that the four species just listed are not all 
really distinct. 
5. T. blechnoides (Willd.) Sm. 
Common. 
India to Fiji. 
T, steuophylla Christ, is a form with very narrow 
pinnae, but I cannot separate it from T. biechnoides. 
9. CONIOGRAMME Fee. 
C. fraxinea (Don) Diels. 
Kinabalu. The only specimen is sterile, but its 
identification is positive. 
Malaya to India and Japan. 
