KEYS TO THE FERNS OF BORNEO 
353 
e. Frond light-green 
ei. Frond dark-brown-green 
di. Veins bearing white hairs 
ofi. Pinnae merely pinnatifid 
b. Veinlets forked. 
c. Rachis naked 
c i. Rachis densely scaly 
b i. Veinlets simple. 
c. Rachis naked. 
d. Frond glabrous 
di. Pubescent beneath 
ci. Rachis hairy, not scaly. 
d. Fronds large, often more than i m. 
long. 
e. Indusia evident; thin 
ei. Indusium wanting ; coriaceous 
di. Fronds mostly under 50 cm. long. 
e. Lowest pinnae abruptly reduced to 
auricles 
ei. Lowest pinnae not much reduced. 
/. Texture chartaceous to cori¬ 
aceous. 
g. Stipe reddish. 
h. Segments entire. 
i. Lamina naked 
n. Minutely ciliate and lime 
dotted 
hi. Segments toothed 
gi. Stipe not reddish. 
h. Lamina naked 
hi. Glandular and hairy 
beneath 
fi. Thin in texture. 
g Stipe light-colored. 
h. Veinlets pilose beneath 
hi. Veinlets naked 
gi. Stipe dark. 
h. Segments entire or crenate 
hi. Lower segments inciso- 
serrate 
a. Rachis bearing scales, at least in the 
lower part. 
d. Pinnae deeply cut. 
e. Coriaceous. 
/. Indusium evident 
fi. Indusium not evident 
8. D. effusa. 
9. D. sub arbor ea. 
10. D. se tiger a. 
11. D. syrmatica. 
12. D. Filix-mas. 
13. D. beccariana. 
14. D. Creaghii. 
15. D. immersa. 
16. D. erubescens. 
17. D. inconspicua. 
18. D. gymnopoda. 
19. D. kinabaluensis . 
20. D. lineare. 
21. D. crasstfolia. 
22. D. Teuschri. 
23. D. calcarata. 
24. D. gracillescens. 
25. D. viscosa. 
26. D. athyriocarpa. 
27. D. e chin at a 
28. D. Hallieri. 
