30 FERNS : BRITISH AN*) FOREIGN. 



found as far north, on the western coast as the Columbia 

 river, it will,, it may be presumed, prove hardy with us. 

 Did space permit, this list of desiderata from North 

 America might be greatly extended ; but I must pass 

 on to the countries of the South, which offer a rich 

 field to the fern- collect or. 



In my enumeration of the Ferns of Panama, in 

 Seemann's " Botany of the Voyage of H. M. S. 

 Herald," I have described a very pretty Fern from 

 Southern Darien under the name of Glffihotcenium 

 crispum, which would be an acquisition to those who 

 grow Ferns in a natural manner, though not suited for 

 pot culture. It is found on trees, from the branches of 

 which its tufts of long and narrow wavy fronds hang 

 down in a very graceful manner. In Darien, Panama, 

 and the adjacent Pacific islands, also, there are several 

 Tree-ferns which we have not yet got; such zsHemUeUa 

 petiolata, a distinct species, with large pinnate fronds, 

 having widely- separated petiolated pinnules ; and 

 AlsopMla elongata, a very robust species. New Gra- 

 nada, Venezuela, and other countries north of the 

 equator, though explored by several collectors, would 

 still yield a good many desirable novelties to our 

 gardens. In the former country I may indicate the 

 several species of the extremely curious genus Jame- 

 sonia, with their very narrow, erect, rigid fronds, conti- 

 nuously developing little orbicular, concave, imbricated 

 pinnae, and densely clothed, while young, with fer- 

 ruginous hairs ; and also Dryomenes Purdiei, a mag- 

 nificent Fern with very deeply pinnatifid fronds from 

 four to five feet long, having extremely-broad segments, 

 covered with numerous small sori, which may probably 

 possess indusia ; but younger specimens than those in 



