TWO NEW MALAYAN FERN GENERA, 



by 

 Capt. C. R. W. K. VAN Alderwerelt van Rosenburgh. 



With plates 14 and 15. 



PARASORUS V. A. v. R. 



Sori longe lineares, submarginales, apices venarum veniilarumque 

 conjungentes; indusium Schizolomae more intramarginale, exterius liberum. 



Rhizoma repens, squamosum. Frondes cum rhizomate articulatae. 



The single species, up till now found, has the mode of growth and 

 the aspect of a simple-leafed Davallia of the Scyphiilaria group, with which 

 it is undoubtedly related. 



Parasorus undulatus V. A. V. R. 



Rhizoma repens, potius scandens, usque 2 m. longum vel longius, 

 copiose ramosum, ramis teretibus, funiformibus, 2 mm. crassis, in sicco 

 brunneis et longitudinaliter rugulosis, leviter cretaceis ; squamae atrae vel 

 atro-brunneae, parte basali rotundae vel oblongae, peltatae, appressae, decidue 

 pallideque scarioso-marginatae, parte apicali abrupte contractae, longe fili- 

 vel piliformes, horizontaliter recurvatae, integerrimae, Stipites remoti, 2-4 

 cm. longl, subsemiteretes, in sicco supra sulcati, parce decidueque squamu- 

 losi, dimidia parte superiore angustissime cuneato-alati. Frondes coriareae, 

 proportione crassae, glabrae, plerumque transverse undulatae, lineares, 

 rectae vel falcatae, 10—18 cm. longae, 1 — 2 cm. latae, basi truncato-cuneatae 

 vel rotundatae, in alam stipitis abrupte transientes, apice sensim angustatae, 

 obtusiusculae ad acutae, margine sterili obsolète crenulato, fertili integerrimo; 

 Costa supra prominens, subtus depressa; basin versus parce decidueque 

 squamulosa; venae copiosae, subhorizontales, furcatae, superiores simplices, 

 in partibus sterilibus frondium liberae. Sori plantae adultae continui, plantae 

 juvenilis interrupti, partes basales angustatas et apicales frondium non 

 occupantes; indusium coriaceum, angustum, margine marginem frondis 

 attingente. 



Squamules of stipe and costa like those of the rhizome but smaller. 



Ternate Island: Foramadiahi, in forest, ait. 600 m, (V. M A. BEGUIN 

 No. 1321, 14 January 1Q21). 



