346 KEYS TO THE FERNS OF 
/ 
fa. Rachis scaly 
« 3 . Fronds at least bipinnate, not dimorphous, 
pinnules at least lobed. 
b. Lobes not much longer than broad. 
c. Axes dark purple, indusium wanting. 
d. Base of rachis brown densely scaly 
on the sides 
di. Base of rachis not densely scaly. 
e. Base of stipe not armed by 
abortive pinnae. 
/. Base of stipe bearing some dark 
scales. 
g. Few scales on costae narrow, 
subentire 
gi. Few scales on costae short, 
fimbriate-ciliate 
/i. Base of stipe densely clothed 
with pallid scales 
e*. Base of stipe armed by abortive 
pinnae. 
/. Pinnules cut about half-way to 
costa 
/i. Pinnules more deeply cut 
fi. Axes not dark purple 
d. Indusium wanting or transient. 
e. Pinnae at most 30 cm long. 
/. Frond blackish above 
/i. Light-green on both sides 
Pinnae more than 30 cm long. 
/. Pinnules neither hairy nor very 
scaly beneath. 
g. Not coriaceous. 
Ji. Stipe bearing narrow scales 
fa. Stipe naked except for broad 
scales at base 
g l . Coriaceous 
/i. Lamina hairy beneath 
d 1 . Indusium evident. 
e. Rachis rather naked. 
/. Pinnules white-scaly beneath 
/i. Without white scales 
ei. Rachis densely scaly. 
/. Subcoriaceous 
/i. Rigidly coriaceous 
b 1. Lobes or secondary pinnules decidedly 
longer than broad. 
c. Margin in most parts toothed. 
BORNEO 
26. C. paleaceii. 
17. C. elliptica. 
12. C. glabra. 
13. C. dubia. 
14. C. Brooksii. 
15. C. vecommutata. 
16. C. ramispina. 
23. C. poiensis. 
20. C. mollis. 
18. C. squamulata. 
19. C. paraphysata. 
24. C. kemberangana 
22. C. Margarctha. 
25. C. polypoda. 
21. C. stipitulata. 
27. C. Havilandii. 
28. C. rigida. 
