— 344 — 



51. Adiantum brasiliense Raddi. — Rhaches supra tomentellae; folia 

 tri-quadripinnata; pinnulae dimidiato-oblongae, obtusae, le viter sursum 

 falcatae; sori pauci, oblongi vel continui. 



Brasilia. 



52. Adiantum cultratum J. Smith. — Rhaches laeves; folia infra 

 glaucescentia, subpedatisecta vel tripinnata; pinnulae petiolulatae, basi 

 inferiore exciso-cuneatae, superiore truncato-rotundata, trapezio-lanceo- 

 latae, profunde incisae, terminales rhombeae; sori oblongi. 



Brasilia, Mexico. 



53. Adiantum gibbosum Roemer in litt., nov. spec. — Rhachis laevis; 

 folia membranacea, glaberrima concoloria, deorsum tripinnatisecta; pin- 

 nulae e basi superiore truncato-rotundata, inferiore exciso-cuneata, tra- 

 pezio-lanceolatae, acuminatae, remote le viter incisae, apice repando- 

 -dentatae; sori elongati, subcontigui, e basi rotundata in margine superiore 

 et postico. — Adiantum attenuatum Beyrich in sched. — 



Brasilia (Beyrich); prope Ilheos (Riedel); sine loc. spec. (Ex herb. 

 Musee de Neuchätel). 



54. Adiantum angustatum Kaulf. — Rhaches supra tomentellae; folia 

 coriacea subpedata, tri-quadripinnatisecta; pinnulae sessiles e basi in- 

 feriore exciso-dimidiata, trapezio-oblongae, obtusae vel acuminatae, 

 deorsum curvatae. 



Brasilia. 



55. Adiantum curvatum Klf. — Rhaches supra tomentellae, infra 

 glabrae; folia membranacea, pedato-quadripinnatisecta; pinnulae sessiles 

 dimidiato-elongatae, obtusae, inaequaliter incisae, deorsum curvatae; sori 

 elongati, leviter curvati. 



Brasilia 



56. Adiantum Leprieurii Hook. — Rhaches supra tomentellae; folia 

 concoloria, subpedata, tripinnatisecta; pinnulae petiolulatae, trapezio-ob- 

 longae, obtusae vel attenuatae, deorsum curvatae; nervi Doodyae. 



Gujana gallica et anglica. 



57. Adiantum flabellulatum L. — Rhaches supra hirto-tomentellae ; 

 folia infra pruinata, subpedato-tripinnatisecta; pinnulae trapezio-lato-ob- 

 longae, obtusae, steriles dentatae; sori contigui elongati. 



India orientalis, imperium Sinense, ins. Sundaicae. 



58. Adiantum pedatum L. — Glaberrimum, pedatum; segmenta fla- 

 bellata, pirmata; pinnulae dimidiato-subovato-oblongae, incisae, infimae 

 petiolulatae; sori pauci elongato-oblongi. 



America borealis, Japonia, imperium Sinense, Sibiria, Sikkim in 

 montibus Himalaya. 



ß. Rhachis divaricata (Spec. 59 — 61). 

 a. Pinnulae breviter petiolatae (Spec. 59—61). 



59. Adiantum flexuosum Hook. — Rhaches supra hirsutae; folia 



