A Catalogue of the Ferns of Borneo and 
some of the adjacent Islands which have been 
recorded up to the present time. 
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The following list contains, I believe, all the Ferns that 
have been recorded from Borneo, the Sulu Archipelago, the 
Natnnas, and a few small islands close to the Borneo Coast. 
It is probably very far from being a complete catalogue of all 
the members of this interesting family that exist in that region. 
The Ferns belonging to Borneo itself have been collected almost 
exclusively in the State of Sarawak, and the Territory of British 
North Borneo. These two countries together occupy about one 
third part only of the whole island, the remainder (with the 
exception of the smal] kingdom still held by the Sultan of Brunei) 
being in the possession of the Dutch Government. It is possible 
that in Dutch scientific publications a few species not mentioned 
here may have been recorded, but, if so, they have not come to 
my knowledge. 
The large number of new species which have been found 
in recent years within a comparatively small area, chiefly by 
Signor Beccari, Mr. Burbidge, Mr. Charles Hose, Dr. G. D. 
Haviland and myself, leads to the belief that a rich harvest 
awaits the collector who shall hereafter visit the less known dis- 
tricts of Dutch Borneo. Of the 430 species and varieties con- 
tained in this list, 114 were first found in Borneo. Seven of 
these have since been met with elsewhere: but there remain 
107 which have no other habitat at present known. Some of 
them are exceedingly rare, several having been only once found. 
I have not in all cases mentioned the collector’s name: 
but it is to be understood that when no name is given, that of 
