80 
FERNS : BEITISH AND FOREIGN. 
lower exterior venules free. Receptacles punctiform, terminal 
on the free venules in the costal areoles. Sori round, transverse, 
uniserial, protruding through the dense scales. 
1. L. incana, J. Sm. Polypodium incanum, Siv. P. velatum, 
Schk. Fil. t. 11 IS. — Tropical America and Southern 
United States. 
2. L. sepulta, J. Sm. Polypodium sepultum, Kaulf. ; Loive's 
Ferns, 1, t. 34 A. 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, i. 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, Presl; J. Sm. 
Rhizome thick and fleshy, or slender and sub-hypogaeous. 
Fronds pinnatifid or pinnate, rarely simple, uniform, 1 — 3 feet 
high, smooth or slightly pubescent, segments and pinnae adhe- 
rent with the rachis. Veins ODce 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 
