120 



FEENS : BRITISH AND FOEEIGW. 



lated, forming numerous elongated subquadrangulax parallel 

 afeoles. 



Ubiius 43. — i'mua of barren frond. No. I. 



1. A. aureum, lAim. ; 8w. ; Pimm. FU. 1. 104 ; ScKk. Fil. 1. 1 ; 

 Book. Om. FU. t. 81 A; Lowe's Ferns, 7, 1 42. Chry- 

 sodium aureum, Fee. Acrostichum fraxinifolium, 

 R. Br. Acrostichum marginatum, 8clik. Fil. t. 3 B. — 

 Tropics and sub-Tropics of both spheres, generally 

 in swamps. 



§4. Plaiyceroe. Bhizome obsolete; sterile frond sessile, de- 

 pressed, concMform ; fertile fronds stipate, repeatedly forked ; 

 segments broad. Veins compound anastomosi/ng. 



46. PLATYCEBIUM, Bern.; Bl. 



Vernation articulate, rhizome obsolete. Sterile fronds sessile, 

 oblique reniform, depressed or elongated and subascending, 

 alternately overlapping each other, forming an epiphytal 

 spongy conchiform mass, often 1-2 feet in diameter. Fertile 

 fronds stipitate, rising from the sinus of the sterile, once or 

 many times dichotomously forked, 2-6 feet in length ; segments 

 broad, obtuse, densely covered with stellated scales, coriaceous. 

 Veimis internal, compound anastomosing. Beeeptaele amorphous, 



