CHAEACTERS OF TEIBE3 AND GENERA. 333 



Type. Asplenium decussatum, Sw. 



Illust. Hook, and Bauer Gen. Fil., t. 56, A.,B. ; Moore 



Ind. Fil., p. 42, A. ; J. Sm. Ferns Brit, and For., fig. 



115 ; Hook. Syn. Fil., t. 4, fig. 38, G. 

 OBS. The species of this genus agree in habit with 

 Diplazium, but differ in the venation being anastomose. 



* Fronds pinnate. 



Sp. C. prolifera, Bory. (v v.) (Asplenium decussatum, Sw.} ; 

 0. accedens (Bl.) ; C. spinulosa, (Bl.) ; C. undulosa (Sw.). 



** Fronds bipinnate. 



C. esculenta (Sw.) (v v.). 



OBS. This species has the honour of being ranked under 

 seven genera, namely, Hemionitis, Ko&nig. ; Asplenium, Sw. ; 

 Diplazium, Sw. ; Anisogonium, Presl ; Digrammaria, Fee and 

 Hook. ; and Microstegia, Presl, which, with the different 

 specific names, under these genera, raised the number of 

 synonyms to thirty. The whole of the species are widely 

 distributed throughout India, Malay, and the Pacific. C. 

 undulosa is a native of Martinique, and in the " Synopsis," 

 several species are described from tropical America. 



191. ASPLENIDICTYUM, J. Sm. (1854). 

 Asplenium Sect. Asplenidictyum, Hook. Ic. PI. 



Asplenium Sect. Hemidictyum, Hook. Sp. Fil. 

 Vernation fasciculate, erect. Fronds pinnate, 1 to 2 feet 

 high, pinnae elliptical-lanceolate, 3 to 8 inches long, 1J to 

 3 inches broad, obtuse or long acuminate, entire, or 

 unequally laciniated, base oblique cuneate ; costae obscure, 

 evanescent. Veins uniform, angularly anastomosing, form- 

 ing elongated subtransverse areoles, without free marginal 



