36 PEENS : BRITISH AND FOEEIGW. 



leriana, after its discoverePj Dr. Lechler. It has 

 large, finely divided, somewhat membranaceous fronds, 

 three or more feet in height, resembhng a species of 

 Barea, and thick acandent rhizomes. Gyathea miero- 

 phylla, found by the same collector, and figured in the 

 same work, appears to be a neat little -Tree-fern, 

 with stems four feet high and finely divided fronds, 

 two or three feet long, ferrugineous from hairs on the 

 under side. Some species of Gymnogramme are 

 worthy of note, such as G. elongata, with narrow 

 pinnate fronds a foot or more long, something like 

 those of the well-known Notholcena trichomanoides, 

 and clothed with copious longish hairs ; G. fiabellata, 

 the fronds of which are about a foot high, bipinnate, 

 with dark shining stipes, and little flabelliform, dicho- 

 tomously divided, green pinnules, and extremely neat ; 

 G. ineisa, which has bipinnate fronds a span or more 

 high, and scarcely more than an inch wide, with the 

 pinnules deeply incised. These Gymnogramms are also 

 found in Venezuela, New Granada, and countries north 

 of the equator, where there is also a remarkable scan- 

 dent species, G. refracta, the finely cut fronds of 

 which continuously increase to a great length, and 

 ramble over the branches of trees. Our collections of 

 GleichenicE might be also enriched with several species 

 from Peru and Ghih, particularly G. simplex from 

 the former, and G. pedalis from the latter. G. simplex 

 having simple, pectinately pinnatifid fronds a foot and 

 a half in length, with short stipes ; and G. pedalis 

 fronds of the ordinary form, something hke G. furcata, 

 but smaller, neater, and more compact in its mode of 

 growth. And, finally, the two singular Polypodioe, 

 with dimorphous fronds, would be very pretty addi- 



