AN ENUMERATION OF CULTIVATED FERNS. 181 
13. P. flexuosa, Link ; Fee. Pteris flexuosa, Kaulf. ; Kook. 
Ic. PI. t. 119. Allosorus flexuosus, Kunze, Fil. t. 23 ; 
Hook, in Bot. Mag. t. 4762. Platyloma flexuosum, 
J. Sm,. ; Lowe's Ferns, 3, t. 25. — Tropical America. T. 
14. P. cordata, J. Sm. ( non Fee). Pteris cordata, Cav. Allo- 
sorus cordatus, Presl ; Kook, in Bot. Mag. t. 4698. — 
Tropical America. T. 
92. PLATYLOMA, J. Sm. {in part) 
Vernation uniserial; sarmentum sub- 
hypogseous. Fronds pinnate, 1-2 feet 
high ; pinnae 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 pinnae, underside. No. 1 ; ditto enlarged. No. 3 . 
