CHABACTEES OF TEIBES AND GENEEA. obi 



Sixteen species are described in the " Synopsis Filicum,' 

 and are widely distributed througliont the tropics and suli- 

 tropics of both northern and southern hemispheres. In 

 general the species are very local, S. dicliotoma is, however, 

 found in the West Indies, Tropical America, New Zealand, 

 Australia, and the Polynesian, Malayan, and Mascareno 

 Islands. 



* Fronds simple, linear. 



Sp. S. australis, Gaud. ; S. pusilla, Piirsli. (v v.) ; S. 

 tenella, KanJf. ; S. fistulosa, Laljill. ; S. pectinata, 8m. 



** Fronds forJced, linear. 

 S. incurvata, ScM. ; S. bifida, Sw. 



*** Fronds hifid, dichotomouslij forked orflahelliform, 

 segments hroad, 



S. rupestris, E. Br. (v v.) ; S. fluminensis, Miers. ; 

 S. Sprucei, Hooh. MSS. ; S. diohotorna, Sw. ; S. elegans, 

 Sw. (v v.). Hook. Gard. Ferns, t. 54. 



Ol;S. — The latter species differs in the fronds being more 

 or less divided, becoming- entire and fan-shajsed, and has 

 been described by Martins as a distinct species under the 

 name of S. flalellum. 



210.— AcmosTACHTs, Wall. (1828). 



Schizcca, Hooh. Syn. Fil. 



Vernation uniserial, contiguous ; sarmentum shoi't. 

 Fronds linear, simple, stipitiform, compressed, triquetrous 

 at the base, 9 to 18 inches high. Costae prominent, con- 

 tinuous. Fertile appendices terminal, 6 to 12, digitate 

 flabellate, 1 to IJ inch long, cristieform ; segments involute, 



