86 



THE BOOK OF CHOICE FERNS. 



Cryptosorus, Fee. 

 Cyrtomiphlebium, Hooker. 

 Cyrtophlebium, J. Smith. 

 Diblemma, J. Smith. 

 Dictymia, J. Smith. 

 Dictyopteris, Presl. 

 Dipteris, Reinwardt. 

 Drynaria, Bory. 

 Dryostachyum, J. Smith. 

 Eupolypodium, LinnaBus. 

 Galeoglossa, Presl. 

 Glaphyropteris, Presl. 

 Glyphotcenium, J. Smith. 

 Gonioplt lebium, Blume . 

 Goniopteris, Presl. 

 Grammitis, Hooker and Baker. 

 Gymnocarpium,, Newman. 

 Gynosorium, Presl. 

 Holcosorus, Moore. 



Lecanopteris, Blume. 

 Lepicystis, J. Smith. 

 Lopholepis, J. Smith. 

 Marginaria, Presl. 

 Microgramme, Presl. 

 Microsorium, Link. 

 Monachosorum, Kunze. 

 Niphobolus, Hooker and Baker. 

 Niphopsis, J. Smith. 

 Paragramma, Moore. 

 Phegopteris, Mettenius. 

 Phlebodium, R. Brown. 

 PTnymatod.es, Presl. 

 Pleopeltis, Hooker and Baker. 

 Pleuridium, J. Smith. 

 Polycampium, Presl. 

 Pseudathyrium, Newman. 

 Stegnogramwia, Brackenridge. 

 Xiphopteris, Kaulfuss. 



The greater part of the above-named sub-genera, however, have now been 

 abandoned, and the comprehensive classification of this extensive genns is 

 limited to the following distinct groups, which are the only divisions retained 

 by Hooker and Baker in the " Synopsis Filicum " as sub-genera, although 

 many of the foregoing names are still referred to by a few writers of the 

 present day : 



Campyloneuron (Camp-yl-on-eur'-on), Presl. In this sub-genus 

 (belonging to the Eremobryoid series, in which the fronds are articulated 

 with the rhizome), the primary veins are distinct from the midrib to the 

 edge, and are connected by parallel, straight or curved, transverse veinlets ; 

 the areola3 (cells) contain two or more spore masses, and the free veinlets 

 are all directed towards the edge. P. angustifolium is one of the best 

 representatives of this sub-genus. Most of the known species have simple or 

 undivided fronds, a few only being pinnate. Nijjhobolus forms an important 

 section of this sub-genus. 



Cyrtomiphlebium (Cyr-tom-iph-leb'-i-um), Hooker. A small sub-genus 

 in which the venation is similar to that of Cyrtomium (Aspidium), i.e., with 

 the contiguous groups uniting irregularly. 



