KEYS TO THE FERNS OF BORNEO 
327 
9. S. ensifolium (Sw.) J. Sm. 
Common. 
Palaeotropic. 
10. S. Hosei (C. Chr.) comb. nova. 
Lindsay a trilobata Baker, non Colenso. 
Schizoloma trilobatum v. A. v. R. 
Lindsay a Hosei C. Chr., Index, p. 394, 1905. 
Sarawak. 
Endemic. 
11. S. heterophyllum (Dry.) J. Sm. 
British North Borneo. 
Malaya to India and China. 
This is doubtfully distinct from Lindsay a orbiculata , 
from which it may seem to be distinguished by having 
anastomosing veins. 
o 
6. SYNGRAMMA J. Smith. 
a. Veins free except for a submarginal con¬ 
necting vein. 
b. Frond oblong 
b 1. Frond lanceolate or linear. 
c. Fronds entire or wavy. 
d. Stipe purple 
d 1. Stipe pale 
<a. Fronds somewhat toothed 
d. Frond coriaceous 
ch. Frond thinnner 
«i. Veins uniting to form marginal areolae. 
b. Frond linear-lanceolate 
b*. Frond broadly lanceolate 
az. Veins anastomosiug rather freely. 
b. Base rounded 
b 1. Base acute 
1. S. valleculata (Baker) C. Chr. 
Sarawak (Mt. Lambir). 
Local. 
2 . S. ANGUSTA Copel. 
Sarawak (Bidi). 
Local. 
D 
1. S. valleculata. 
5. S. lobbiana. 
2. S. angusta. 
3. S. borneensis. 
4. S. cartilagidens. 
6. S. Wallichii. 
7. 5 . alismifolia. 
8. S. Hosei. 
9. S. Hookeri. 
♦ 
