80 



FERNS I BRITISH AND FOREIGN. 



lower exterior venules free. Receptacles punctiform, terminal 

 on tlie free venules in the costal areoles. Sori round, transverse, 

 uniserial, protruding through the dense scales. 



1. Ii. incana, J". Sm. Polypodium incanum, Sw. P. velatum, 



SchJk. Fil. t. 11 B. Tropical America and Southern 

 United States. 



2. L. sepulta, /. Sm. Polypodium sepultum, Kaulf. ; Lowe's 



Ferns,!, t. 34.4. P. rufulum, Presl. P. hirsutissimum, 

 Rad. Fil. Bras. t. 26. Acrostichum lepidopteris, Lang, 

 et Fisch. Ic. Fil. t. 2. Tropical America. 



3. L. squamata, J. Sm. Polypodium squamatum, Linn. 



(Plum. Fil. t. 79) ; Lowe's New Ferns, t. 34. West 

 Indies. 



4. L. rhagadiolepis, J. Sm. Goniophlebium rhagadiolepis, 



Fee, Mem. Polypod. t. 19,/. 3. Polypodium thysano- 

 lepis, A. Braun. Tropical America. T. 



7. GONIOPHLEBIUM, Prcal; J. Sm. 



Rhizome thick and fleshy, or slender and sub-hypogaeous. 

 Fronds pkmatifid or pinnate, rarely simple, uniform, 1 3 feet 

 high, smooth or slightly pubescent, segments and pinnaB adhe- 

 rent with the rachis. Veins once or more times forked, or equally 

 pinnate, the lower anterior venule always free, the rest angu- 

 larly anastomosing, and generally producing an excurrent free 

 veinlet from the junctions. Receptacles punctiform, superficial, 

 terminal on the anterior free venules and also often on the 



Genus /. Portion of mature frond. No. 12. 



