v4 AMERICAN FERN JOURNAL 
together with the rapid disappearance of the forest, 
serves to make the fern flora of this region exceedingly 
sparse. The open woods from Empire and Summit 
(at the top of the Divide) to the Pacific present a certain 
sameness in fern flora. Some eight or ten species of 
Adiantum, Pteridiwm caudatum, Blechnum occidentale, 
Pityrogramma  calomelaena, Polypodium  costaricense, 
P. polypodioides, Dryopteris tristis, Asplenium auritum, 
Lygodium polymorphum, and Dicranopteris flexuosa 
make up the great bulk of the ferns. 
Ancon Hill, with an altitude of about 650 feet, is 
situated on the shore of the Pacific near the Canal 
entrance. The lower half of the hill is occupied by 
the towns of Ancon and Balboa; the upper half con- 
sists partly in dry fields and partly in woods. In addi- 
tion to many of the species mentioned above, three 
rather noteworthy ferns were found on the hill: Adian- 
tum filiforme, Anemia oblongifolia, and a species of 
Lindsaya. 
TABOGA 
The island of Taboga, situated in the Pacific some 
twenty miles off the mainland, lying similarly in the 
“dry” belt and consisting largely in grass-covered hills 
and more or less open woods, is not of great interest 
to the fern collector. In addition to the ferns usually 
characteristic of this habitat there occur on the island 
quantities of Nephrolepis biserrata and N. ezaltata, 
found chiefly on palm trees, Dryopteris longifolia, and 
a rather large Polypodium, possibly new. 
Et Boqvuers, Province or Curriqut 
One of the most interesting regions for ferns on the 
whole North American Continent lies among the moun- 
tains of the Cordillera, between the Provinces of Chiriqui 
and Bocas del Toro, in the western part of the Republic 
of Panama near the Costa Rican boundary. The 
