FERNS OF JAMAICA 37 
favorable to fern growth; at other times it follows the 
leeward slopes. On the trunks and branches of trees in 
the moist forests masses of Polypodia and Hymenophylla 
hang down, while various species of Diplazium and As- 
plenium are found as terrestrial plants. On the leeward 
slopes and in open situations Polystichum struthionis, 
Pteridium aquilinum, Histiopteris incisa, Pityrogramma 
calomelaena, as well as various species of Dicranopteris 
and Lomaria, occur. Tree-ferns, some of them reaching 
thirty feet in height, are common. 
The three mile road to Morce’s Gap in general re- 
sembles the more open portions of the trail to Sir John’s 
Peak. Deep ravines, however, frequently occur and 
these are filled with a varied assortment of ferns. The 
trail gradually works its way to the windward side of 
the ridge, where another very fruitful region is found. 
Tree-ferns are particularly abundant at Morce’s Gap. 
In making the descent from Cinchona to Papine 
(about fifteen miles distant and at an altitude of about 
1000 feet) the characteristic ferns found were Pityro- 
gramma sulphurea and tartarea, Blechnum occidentale, 
Pteris longifolia, Anemia hirsuta, Notholaena_tricho- 
manoides, Cheilanthes microphylla, and Trismeria tri- 
foliata. One of the two native species of Adiantum, 
(A. concinnum) found in this part of the island, was 
discovered a few miles east of Papine. These ferns 
also characterized the flora along the road to Neweastle. 
A few days were spent at Hollymount (altitude, 2000 
to 3000 feet) in the center of the island. Here the ferns 
for the most part were representatives of the genera 
Dryopteris, Polystichum, Adiantum, and Tectaria. The 
roadsides both here and at Moneague and St. Ann’s 
Bay, later visited, were lined with Anemia adiantifolia 
and Adiantum tenerum. Occasionally unusual forms of 
Polypodium would be found, twining about trees and 
trailing over rocks. . 
