CHAEACTEES OF TEIBES AND GENEEA. 331 



difFering only in the veins beino- reticnlated. They are 

 placed in three different genera by authors, namely Anti- 

 gramma, Camptosorus, and Bchafiici-ia, Ijnt, 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, — Antigeamma, vera. 

 Fronds linear lanceolate, or ovate cordate, 6 to 12 inelies long. 

 Sp. A. brasiliense (Sio.) (v v.) ; A. plantaginea, Pr. 

 {Asplenium Douglassii, Kooh. and Orev. le. Fil., t, 160). 



Sect. 2.— Campiosoeus, Presl. (1836). 



Fronds lanceolate, auricled at the hase, 4 to 9 inches long, 

 decwmhent, reciirvafe, ivith a roofing viviparous apex, 

 forming compact patches of fronds. Sort short, 

 generally curved, 



A. rhizophylla, Pr. (v v.) ; A. sibirica (Hook.). 



Sect. 3.— Schaffneeu, Fee. (1856). 

 Fronds stipate, round, ojjovate, 1 to li inches broad, texture 

 thick, firm. Veins reticulated, without a midrib. Sori 

 ohlong or linear, in irregular patches. 

 A. nigripes {Fee.) ; Eew Gard. Misc., 9, t. 9 {Scolopen- 

 clrium, Hook. Syn. Fil, i. i,fl.g. 41 c). 



Ocs. — The two first are natives of Bi-azil, the third of 

 North America, the fourth of Mexico. 



189.— OsYGONroJi, Presl (1836). 

 Anisogonium, Pr. (1836) ; Asplenium, sect. Anisogonium, 



Hooli: Spi. Fil. ; Dipjladum sp., authors. 

 Vernation fasciculate. Fronds simple or pinnate, the 

 simple ones sub-cordate, 1 to 2 feet high ; pinnaa entire, 



