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lata -«^, lenticularia , gloh. v. obovata, sub annuli verticalis 

 fere circularis apice lateraliter et transverse ruptilia. Sori hy- 

 pophylli, raro et epiphylli, rotundi, oblongi, Hneares v. amor- 

 phi, dorso v. apicibus venarum insidentes. Indusium superum, 

 inferum, laterale, cupulare v. O. Sporae variae. Familia vastis- 

 sima, per omnem terrarum orbem sparsa, divisiones pkires 

 imperans. 



A. PolypodlaricE s. Gjmnosorece nob. Sori nudi v. vix 

 margine fohi v. pihs connatis velati: 



a. Taenitideae: sori nudi, in unum v. plures, margina- 

 les V. intramarginales confluentes : Monogramma^ Taenitis, 

 Poljtcenium, Notholaena , Pteropsis . . . 



b. Acrostichece: exoticae; sori amorphi: sporangia per 

 omne dorsum ( raro et faciem ) folii fertilis absque ordine 

 diffusa: — Poljbotrya, Oljersia^ Platyceriiim^ Acrostichum^ Poe- 

 cilopteris 



c. Grammitideae: sori oblongi v. linear. intramargina- 

 les, discreli, dein saepe confluentes , rachi v. venis venuhsve 

 impositi: — Antrophyum^ Hemionitis^ Gymno^ramme.^ Cete- 

 rach\ — Grammitis., Stegnogramma ., Meniscium, Synamnia, 

 Seliguea.... 



d. Polypodieae: sori discreti orbiculares, raro ovales, qui- 

 busdam papiflis insidentes, squamuhs interspersi v. velati et 

 margine fohi reflexo: — Polypodium, Woodsia? Goniopteris, 

 Marginaria^ Campyloneurum ., Pleopeltis, Phymatodes^ P^Jg' 

 mium.^ ISiphobolus.... Lecanopteris ^ Calymnodon, Jamesonia\ 

 Struthiopteris. 



B. Aspleniarice s. Cryptosorece nob.'. sori indusio veroo 

 V. margine folii repHcato velati : 



e. Pterideae: sori seriali, in unum marginalem v. cos- 

 talem confluentes v. interrupti, et tunc semper rachi v, mar- 

 gini fohi v. segmenti paralleh, hnear, v. lunulati: — Pteris, 

 Allosorus., Notochlaena., CheilantJies ., Cassebeera ^ Adiantuniy 

 Lonchitis; — Lomaria, Blechnum ; DoodiUy Woodwajdia... 



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