CHABACTEES OF TEIBES AND GENERA. 199 



of the frond as in Polysticlium anoniahim ; in tliese cases 

 the indusium forms a cucullate cyst. Judging from the 

 whole aspect of the plant, and its anomalous fructification, 

 it may be viewed as an abnormal form of the Aspidecu 

 above-mentioned ; I therefore place it in the present 

 sequence. 



Sp. T. Moorei, /. Sm., Ferns, Brit, and For. (v v.). 



B. Indusium orbicular or reniform. 

 103. PoDOPELTis, Fie. (1851.) 



idiuni sp., and.; Hook. Sp. Fil. 



Vernation uniserial, sarmentum slender. Fronds simple, 

 elliptical lanceolate, margin entire or sinuose, 1 to Ij feet 

 long (stipes long). Primary veins costseform, venules 

 compound anastomosing, with free veinlets, terminating in 

 the areoles. Sori punctiform, compital in two or more 

 rows, or irregular between the primary veins. hidusiuin 

 peltate. 



Type. Aspidium Singaporianum, Wall. 



Illust. Fee., Gen. Fil., t. 23 A., fig. 1. 



Obs. Under this g-enus I include two species which 

 differ from true Aspidium in having sarmentose vernation, 

 and simple fronds. 



Sp. P. Singaporiana {Wall., Hook, and Grev., Ic. Fil., 

 t. 26) ; P. sinnata, J. Sm. {Bath^niwn, Fee). 



Obs. — The first is a native of Singapore, and the other 

 of Guiana. In the " Species Filicum " P. sinuatum stands 

 as a synonym of Aspidium plantagineum, of which Sir 

 W. Hooker says : " My copious specimens fi-om the West 

 Indies and the continent of South America, have satisfied 

 me that the Polypodium plantagineum (Jacq.) and our 

 Aspidium plantagineum are one and the same Fern, varying 



