CHAKACTEES OF TRIBES AXD GEXEKA. 289 



guislied by the venation being' reticulated, in that respect 

 ag-reeiug- with the following g-enus, Litohrochia. 



The following are the principal well-marked species, all 

 of which are natives of the Western hemisphere, except D. 

 ludens, which is a native of the Malayan and Philippines, 

 and which also differs from the rest of the species in its 

 vernation being sarmentose. 



* Vernation uiiiserial, sanneiitose. 

 D. ludens (JFall.) (D. WalUcltu, J. Srn., 1841; Bedd. 

 F. Brit. Ind., pi. 27). 



** Vernation fascioulate, generally ciesjntose. 



D. sagittifolia {Baddi) (v v.) ; D. lonchophora (Mett.) ; 

 D. pedata (Linn.) (v v.) ; D. palmata (Willd.) (v v.) ; D. 

 collina (Baddi) (v v.) ; D. ornithopus (Mett.) ; D. decipiens 

 (_Hooh.) ; D. decora {Bracken. Fil., t. 13). 



The two latter are natives of the Sandwich Islands, the 

 others are almost confined to Brazil. 



164. PELLiEOPSIS, J. Sin. 



Pellcea sp., Hoolc. Sp. Fd. 



Vernation fasciculate, sub-crespitose. Fronds 6 to 18 

 inches or more in length, pinnate or bi-sub-tri-pinnate, firm, 

 smooth, castania-ebeneus ; jiinnre and pinnules sessile, arti- 

 culate with the rachis. Veins anastomosing. Beceptacirs 

 transverse, marginal, forming a continuous sorus. Indiisium 

 narrow. 



Type. Ptcris articniata, Kaidf. 



Obs. — The two species which constitute this genus, agree 

 in general habit with Pellcea, but differ in having reticulate 

 venation, Avhich brings them in afilnity with Dorijopferis, 

 V 



