DICTYOXIPHIUM DIDYMOCHLJ3NA. 



41 



DICTYOXIPHIUM. 



Derived from the Greek diktyon, a net, and xiphos, a 

 sword, referring to the shape and net-like venation of the 



fronds. Nearly allied 

 to Lindsaea. There is 

 only one species in 

 cultivation. 



DICTYOXIPHIUM 

 PANAMENSE (Panama), 

 Fig. 19. Originally 

 found at Panama, but 

 since then in other 

 parts of South Ameri- 

 ca. Fronds 2 feet high, 

 bright green, smooth, 

 erect-growing, entire, 

 sword- shaped, leath- 

 ery. It can only be 

 increased by spores, or 

 very rarely and slowly 

 by division. It is by 

 no means a striking or 

 very beautiful plant. 



DIDYMOCHL^NA. 



This generic name 

 is derived from di- 

 dymos, double, and 

 cJilaina, a cloak, alluding to the double indusium. There is 



?. 19. Dictyoxiphium panamense. (Top of fertile 

 frond, and section from barren frond, natural size.) 



only one known species, and even that is rather rarely met with. 



DIDYMOCHL^NA TRUNCATULA (Eather truncate), Fig. 20. 



Native of West Indian and Philippine Islands. Fronds bright 



green, elegant, about 4 feet high, broadly lanceolate, bipinnate ; 



