458 Observations on Ferns 



2. G. angustifolia, Willd. Sp. PI. vol. v. p. 153. [Polypo- 

 dium). 



This is a true Grammitis ; Willdenow had not seen the fructifica- 

 tion. Polypodium dimorphum of Link is probably the true P. angus- 

 tifolium, which is figured in Raddi, t. 24, /. 2. This fern grows in 

 more open situations than the preceding. 



Mayday Mountains. 



T.ENITIS, Sw. 



T. lanceolata, Kaul.; Plum. Fil. #.132; Kaul. Enum. p. 130. 



I found this fern but once ; it was growing on the rotten stump of a 

 tree in a coffee-plantation in the Mayday Mountains. 



Polypodium, Linn. 



1. P. exiguum, n. s. 



P. exiguum, frondibus glabris repandis, sterilibus oblongis, fertilibus li- 

 nearibus apice attenuato, caudice filiformi, soris solitariis. 



Frons glabra, sterili semipollicari oblonga repanda ; fertili sesquipollica- 

 ri lineari repanda utrinque attenuata. Caudex filiformis repens setoso-pa- 

 leaceus. 



This and the following species are rather common on stone walls in 

 the Mayday Mountains. I believe they have not been previously de- 

 scribed. 



2. P. glabellum, n. s. 



P. glabellum, frondibus glabris, sterilibus oblongis, fertilibus lineari-lan- 

 ceolatis bifidisque, margine reflexa, caudice filiformi repente, soris solitariis 

 immersis. 



Frons glabra, margine reflexa, sterili pollicari oblonga; fertili bipollicari 

 lineari-lanceolata bifidaque. Sori solitarii immersi, margini approximati. 

 Caudex filiformis repens setoso-paleaceus. 



I have specimens of this fern also from Trinidad. 



3. P. serpens, Sw.; Plum. Fil. t. 121; Willd. Sp. PI. vol. v. p. 



148. 



Common on the trunks of trees in the shady woods. 

 Mayday Mountains. 



4. P. Phy llitidis, Linn.; Plum. Fil. #.130; Willd. Sp. PI. 



vol. v.p. 157. 

 Common on the honey-combed limestone rocks in the Mayday 

 Mountains. 



5. P. crassifolium, Linn. ; Plum. Fil. t. 123; Willd. Sp. PI. 



vol. v. p. 161. 

 Veiy frequently found with the preceding species. 



6. P. pectinatum, Linn. ; Bot. Cab. t. 748 ; Willd. Sp. PI. 



vol. v. p. 180. 



