t 
CHARACTERS OF TRIBES AND GENERA. E 
: differing only in the veins being reticulated. "They are 
placed in three different genera by authors, namely Anti- 
gramma, Camptosorus, and Schaffneria, but, unless the dif- 
ferent habit and forms of the fronds are taken into con- 
sideration, they have no title to rank higher than sections 
of Antigramma. 
Sect. 1.—À NTIGRAMMA, vera, 
Fronds linear lanceolate, or ovate cordate, 6 to 12 inches long. 
Sp. A. brasiliense (Sw.) (v v.); A. plantaginea, Pr. 
(Asplenium Douglassii, Hook. and Grev. Ic. Fil., t. 150). 
Sect, 2.—Camprosorus, Presl. (1836). 
Fronds lanceolate, auricled at the base, 4 to 9 inches long, 
decumbent, recurvate, with a rooting viviparous apez, 
forming compact patches of fronds. Sori short, 
generally curved. | 
A. rhizophylla, Pr. (v v.) ; A. sibirica (Hook.). - 
Sect. 9.—ScnarrxERD, Fée. (1856). 
Fronds stipate, round, obovate, 1 to 13 inches broad, texture. 
thick, firm. Veins reticulated, without a midrib. Sori 
oblong or linear, in irregular patches. 
A. nigripes (Fée.) ; Kew Gard. Mise., 9, t. 9 (Scolopen- 
drium, Hook. Syn. Fil., t. 4, fig. 41 c.). 
Oss.—The two first are natives of Brazil, the third of 
North America, the fourth of Mexico. 
? 189.—Oxyconrum, Presl (1836). 
SE Anisogonium, Pr. (1836) ; Asplenium, sect. Anisogonium, 
SCH Hook. Sp. Fil.; Diplazium sp., authors. 
~ Pernation fasciculate. Fronds simple or pinnate, the 
‘Simple ones sub-cordate, 1 to 2 feet high; pinnæ entire, 
