AN ENUMERATION OF CULTIVATED FERNS. 



181 



13. P. flexuosa, Link ; Fee. Pteris flexuosa, Kaulf. ; Hook. 



Ic. PL t. 119. Allosorus flexuosus, Kunze, Fit. t. 23 ; 

 Hook, in Sot. Mag. t 4762. Platyloraa flexuosum, 

 /. 8m. ; Lowe's Ferns, 3, t. 25. Tropical America. T. 



14. P. cordata, /. 8m. (non Fee). Pteris cordata, Cav. Allo- 



sorus cordatus, Presl ; Hook, in Bot. Mag. t. 4698. 

 Tropical America. T. 



$2. PLATYLOMA, /. 8m. (in part) 



Vernation uniserial ; sarmentum sub- 

 hypogaeous. Fronds pinnate, 1-2 feet 

 high ; pinnas entire, opaque. Veins 

 forked ; venules free. Receptacles ter- 

 minal, oblong, contiguous, forming a 

 broad, compound, continuous, mar- 

 ginal sorus. Indusium linear, con- 

 tinuous, narrow, subobsolete. 



Genus 92.- Fertile pinnce, underside, No. 1 ; ditto enlarged. No. 3. 



