2 
CATALOGUE OP PERNS. 
4. P. vulgare, Linn. ; Fng. Lot. t. 1149 ; Lindl. and Moore's 
Lrit. Ferns , t. 1 . f. A , L , C , and 2).— Var. I. acutum, f. 
F. Var. II. bifidum, f. F. Far. III. semilaeerum, t. 2. 
f. A. Var. IV. serratum, f. L. Var. V. Cambricum, t. 
3. f. A. Var. VI. crenatum, f. L. — Northern Temperate 
Zone. 
5. P. Karwinskianum, A. Lraun. — Mexico. 
6. P. plebejnm, Schlecht. — Mexico. 
7* P. appendiculatum, Linden. — Mexico. 
8. P. fraternum, Schlecht. P. Henchmanii, J. 8m. — Mexico. 
9. P. snbpetiolatum^ Hook. Ic. FI. t. 391-2. — Mexico. 
2. liEPICYSTZS, J. Sm. 
(Marginaria, Fresl. Groniophlebium § Lepicystis, J. Sm. Gen. 
Fit. Polypodii sp., Auct.) 
Fronds pinnatifid, densely squamose. Veins anastomosing, the 
lower exterior venule of each fascicle free, bearing sporangia on its 
apex within the costal areoles. Sori round, protruding through 
the dense squamae. 
1, la. in can a, J. Sm. Polypodium incanum, Siv. P. velatum, 
ScVk. Fit. t. 11, L. — Tropical America, and Southern 
United States. 
8. la. sepulta, J. Sm. Polypodium sepultum, Kaulf. P. rufu- 
lum, Fresl. P. hirsutissimum, Ladd. Fil. Bras. t. 26. 
Acrostichum lepidopteris, Lang, et Fisch. Ic. Fil. t . 2. — 
Tropical America. 
3. Zb. sqaamataj J. Sm. Polypodium squamatum, Linn.; 
Flum. Fil . t. 79. — West Indies. 
3. GOmOFELEBIUM, Fresl; J. Sm. 
(Marginarise sp., Fresl. Polypodii sp., Auct.) 
Fronds pinnatifid or pinnate, rarely simple. Veins anastomos- 
ing, with a free excurrent venule in each areole, bearing sporangia 
on its apex. Sori round or oblong, transversely 1-6-serial. 
