382 
KEYS TO THE FERNS OF BORNEO 
c. Large ultimate segments less than 5 
mm. wide. 
d. Outer end of segments fine-toothed 
di. Outer end of segments truncate and 
incised. 
e. Segments usually separated by less 
than their own width 
e*. Segments very far apart 
Larger segments 1 cm. wide or wider. 
d. Sori reaching nearly to margin 
di. Sori remote from margin 
a 1 . Sori solitary on narrow segments ( Darea ). 
b. Terrestrial. 
c. Fronds less than 15 cm. tall 
a. Fronds taller 
01. Scandent 
26. A . laserpitifolium. 
27. A.cuneatum. 
28. A. Elmeri. 
29. A. affine. 
30. A. nitidum. 
31. A. dichotomum. 
32. A. Belangeri. 
33. A. scandens. 
1. A. Phyllitidis Don. 
Sarawak ; probably throughout Borneo. 
India to the Philippines and New Guinea. 
2. A. Nidus L. 
Common. 
Throughout the Eastern Tropics. 
3. A. ellipticum (Fee) Copel. 
A. musifolium Mett. 
Sarawak. 
Philippines. 
4. A. SQUAMULATUM Bl. 
Common. 
Malava. 
J 
5. A. Brooksii Copel. 
Sarawak (Bau). 
6. A. filiceps Copel. 
Sarawak (Tringos). 
Local. 
7. A. SCO LOPE NDROIDES J. Sm. 
A . glochidiatuin Racib. 
Sarawak, Dutch Borneo. 
Philippines. 
