KEYS TO THE FERNS OF BORNEO 
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3 . ANGIOPTERIS Hoffmann. 
a. Stipe and rachis very scaly 
a*. Stipe and rachis not very scaly. 
1. A./erox. 
b. 'Recurrent veins not evident. 
c. Sori not marginal 
a. Sori very near the margin 
2. A. muricata. 
3. A. Brooksii. 
b 1 . Recurrent veins evident. 
c. Costa pale 
a. Costa dark 
4. A. subinteger vim a. 
5. A. evecta. 
1. A. ferox Copel. 
Sarawak (Mt. Penrissen). 
Local. 
2. A. muricata Presl. 
“ Borneo.’' 
Endemic. 
3. A. Brooksii. 
Sarawak (described from Bau). 
Endemic. 
4. A. SUBINTEGERRIMA V. A. V. R. 
Dutch Borneo (Semedoem). 
Local. 
Not clearly distinguished from A. evecta. 
5. A. evecta (Forst.) Hoffm. 
Reported from Sarawak, Dutch Borneo and North 
Borneo. 
The Ivew idea has been to reduce the whole large 
genus to this species, with the result that its actual 
distribution is altogether in doubt. 
From Kinabalu we have an apparently undescribed 
species, and many more may be expected from Borneo 
when they are carefully collected. 
4 . MARATTIA Swartz. 
a. Rachis smooth 
# 1. Rachis fleshy-wrinkled 
1. M.fraxinea. 
2. M . Brooksii. 
i. M. fraxinea Sm. 
Sarawak, Dutch Borneo. 
Palseotropical (?) ; range in doubt because this has 
been made to include many species. 
