KEYS TO THE FERNS OF BORNEO 
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4. N. cordifolia (L.) Presl. 
Sarawak, Dutch Borneo; probably everywhere. 
Tropics, to Japan and New Zealand. 
5. N. EXALTATA (L.) Schott. 
Sarawak, Dutch Borneo. 
Pantropic, and cultivated. 
6. N. hirsutula (Forst.) Pr. 
Dutch Borneo, British North Borneo. 
Pantropic. 
7. N. PILOSULA V. A. V. R. 
Boundary of Dutch Borneo and British North 
Borneo (Amdyah). 
Endemic. 
S. N. BISERRATA (Sw.) Schott. 
N. acuta Presl. 
Common. 
Pan tropic. 
9. N.(?) marginalis Copel. n. sp. 
Kinabalu. 
Local. 
30. CYATHEA Smith. 
a. Frond simply pinnate. 
b. Indusium persistent. 
c. Terminal pinna like the others 
a. Terminal pinna lobed at base 
Zu. Indusium wanting or fugacious. 
c. Base of pinnae truncate 
fi. Base of pinnae rounded or cuneate. 
d. Scales at base of stipe fuscous 
d*. Scales at base of stipe tawny. 
e. Scales under 1 cm. long 
e*-. Scales over 2 cm. long 
a 1 . Fronds bipinnate, dimorphous, without 
indusia. 
b. Lobes of sterile pinnules 5 mm. wide 
Zn. Lobes of sterile pinnules 2 mm. wide 
a2. Fronds bipinnate, not dimorphous, pinnules 
entire or nearly so, indusium present. 
b. Rachis not scaly. 
c. Pinnae lanceolate. 
d. Pinnules about 5 mm, wide 
d 1 . Pinnules about 1 cm. wide 
c 1. Pinnae broad-oblong 
1. C. Brunonis. 
2. C. ca pit at a. 
3. C. pseudobrunonis. 
4. C. fuscopaleata. 
5. C. atthropoda. 
6. C. kinabaluensis . 
10. C. Hewittii. 
11. C. Toppiitgii. 
7. C. dulitensis. 
8. C. alternans. 
9. C. sarawaktnsis. 
