Ii3 CHAKACTEES OF TKIBES AND GEN'ERA. 



Type. Meniscium reliculalum, Schreb. 

 lUust. Hook, and Bauer, Gen. Fil., t. 40 ; Schott. Gen. 

 Fil., t. 14 ; Moore Tnd. Fil., p. 34 B. ; J. Sm., Ferns, 

 Brit, and For., %. 63 ; Hook. Syn. Fil., t. 6, %. 54. 

 Obs. — In the " Synopsis Filicum " ten species are 

 described, six of which are natives of the tropics of the 

 Eastern and four of the Western hemispheres. 



* Fronds sim'jile. 

 Sp. M. simplex, Hook, (v v.) ; M. giganteum, Hook, (v v.). 



** Fronds pinnate. 

 M. triphyllnm, Siv. (v v.) ; M. serratum, Cav. (v v.) {M. 

 palustre, Badd.) ; M. dentatum, Fr. (v v.) ; M. reticalatum, 

 S'lv. (v V.) ; M. angustifolium, Willd. ; M. salicifolium, 

 Wall. ; M. pauciflorum. Hook. 



63. — DicrroCLiNE, Moore (1855). 

 Hemionitis, Hook. Sp. Fil. 



Vernation decumbent, sub-sarmentose. Fronds long 

 stipitate, pinnatifid and pinnate, 3 to 4 pairs, petiolate, broad 

 lanceolate, acuminate, falcate, 5 to 6 inches long, 1 to I5 

 inches broad. Primary veins costieform, combined by 

 transverse arcuate or zig-zag anastomosing venules, the 

 lower forming one oblong costal areole, the others, three 

 series of unequal sub-hexagonal areoles between the primary 

 veins. Sori reticulate. S^jorangia furnished with one or 

 two straight setea. 



Type. Bictyodine Griffithii, Moore, 



niust. Hook. Fil. Exot , t. 93 ; Moore Ind. Fil., p. 46, A. 



Obs. — The present genus was founded by Mr. Moore 

 upon a Fern from Assam, and placed upon account of its 

 sori being reticulated, next to Hemionites, but it possesses 



