120 



FEENS : BRITISH AND FOREIGN. 



lated, forming numerous elongated subquadrangular parallel 

 arcoles. 



Gomus 45. — Pinna of barren frond. No. I, 



1. A. aureum, term. ; Sw. ; Plum. Fil. t. 104 ; SchTc. Fil. 1. 1 j 

 Hooh. Gen. Fil. t. 81 A; Lowe's Ferns, 7, t. 42. Chry- 

 sodium aureum, Fee. Acrostichum fraxinifolium, 

 It,. Br. Acrostichum marginatum, Sclilc. Fil. t. 3 B. — 

 Tropics and sub-Tropics of both spheres, generally 

 in swamps. 



§ 4. Platycerce. BMzome obsolete ; sterile frond sessile, de- 

 pressed, conchiform ; fertile fronds stipate, repeatedly forlced ; 

 segments broad. Veins compound anastomosing. 



46. PLATYCERIUM, Dew.; 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. 

 Te\/fts internal, compound anastomosing, Receptacle amorphous, 



