NO. 4 NEW GENUS OF FERNS FROM PERU MAXON 5 



meet at maturity. The sporangia then appear to have arisen from the 

 whole lower surface, as has erroneously been stated to be the fact. 

 In Saffordia the sporangia occupy less space actually and relatively 

 and, from the greater size of the fronds, appear only as a broad, 

 slightly intramarginal band. 



Saffordia thus represents a new type of fern almost exactly inter- 

 mediate between Doryopteris and Trachypteris, having the habit and 

 general structure of the former and the scaly covering and soriation 

 characteristic of the latter genus. It is clearly a member of the 

 Pteridege, as is Doryopteris, and must carry with it to that tribe the 

 genus Trachypteris, which latterly has been placed among the 

 Acrosticheae. 



The discovery of this new genus in a region relatively so accessible 

 is interesting not only in itself but also as suggesting the probable 

 richness and peculiarity of a fern flora as yet little known. 



