111 
Ferns of the Isthmus of Panama 
GEORGE F. CLEVELAND 
I have been requested by several members of the Fern 
Society to write an article for the new FerN JourRNAL on 
I will begin by 
f the 
the ferns of the Isthmus of Panama. 
saying that I have practically no knowledge « 
genera or species of the tropics, and my time is somewhat 
GATEWAY AND WATCH TOWER AT Fort San SeBasTIAN, Porto BELLO, PANAMA 
limited. I am very glad, however, to do what I can to 
help along our new official publication. The following 
notes will be mainly descriptive, and divided under the 
headings of locality, geological conditions, and atmos- 
pherice conditions. 
I am located at Porto Bello, Panama, which is about 
twenty miles from the Canal Zone proper, and presents 
some considerable differences in vegetation from the 
Canal Zone. The flora of this section is somewhat re- 
stricted in species, owing probably to its proximity to 
