- 143 — 



incisae, basi latissime truncato-cuiieatac ; sori lineari-oblongi, ad venas 

 mediales, iiidusio lato, profundissime ciliato-fimbriato, fragili. 



Stipes very spariiigly miiricate, scaly towards tlie base; scales propor- 

 tionally small, fiiscous, more or less short- and broad-obloiig with 2 

 adpressed, overlapping basai lobes, deciduous, leaving the stipe roughish by 

 their persistent bases. 



On rocks in forest; ait. 400 m. 



Sumatra {Dell, Betimoes River, J. A. Lôrzing No. 5718, 10 June 1918). 



Diplazium latifolium (Don), Moore, Ind., 141; v. A. v. R., Mal. 

 Ferns, 416; D. maximum, C Chr., Ind. Fil., 235; Asplenium latifolium, 

 Don, Prod. Flor. Népal., 8. 



Spécimens occurring in the Buitenzorg Herbarium are distinguished 

 as follows: Scales of the stipe proportionally long and narrow, linear- 

 lanceolate to -subulate, somewhat crisped, brown, as a rule dark-margined 

 and minutely denticulate, the teeth horizontal, dark, coinmonly split at the 

 tipinto 2 divaricating, recurved, hamiform toothlets; pinnulae firm-herbac- 

 eous to coriaceous; indusium varying from narrow and entire to relatively 

 broad and eroso-denticulate. 



Diplazium asperumBl. Enum. PI. Jav., 11, 195; v. A. v. R., Mal. 

 Ferns, 420; Supplem. 1, 272. 



Forma typica. - Also in Sumatra (Dzli, Sibolangit, J. A. Lôrzing 



No. 5455a ). 



Forma latior: Like the type but the fronds still more firmly coriaceous, 

 the largest pinnulae to 3'/2 cm. broad at the base, with their lobes lather 

 remote, acute or subacute -Sumatra Deli, Sibolangit, J. A. Lôrzing No. 5455^). 



Doryopteris ludens (Wall.), J. Sm., Hist. Fil., 289 ; v. A. v. R., 

 Mal. Ferns, 347; Pteris ludens, Wall., Hk. , Spec. Fil., 11, 210. 



Fertile fronds with the segments varying from laticeolate to linear, 

 straight to falcate, the lowest forked or with 2 similar segments on the 

 posterior side. 



Also in Sumatra (Dell, Bandar-baroe, J. A. Lôrzing no. 5868). 



Drynaria pleuridioides, Pr. , iu Ann. Mus. Bot. L. B., II, 229; 

 V. A. V. R., Mal. Ferns, 697. 



C. J. Brooks' No. 468/S from Sumatra {Bengkoelen, Lebong Donok) 

 differs from our Javanese spécimens in having the lobes of the fertile fronds 

 larger, to 25 cm. long and to 5 cm. broad. 



Dryopteris paraphysophora, v. A. v. R. 



Lastrea. — Stipites40 cm. superantes, squamosi; squamae e basi lata subul- 

 atae, flexuosae, fuscae, integerrimae, basi parsistente, longitudinaliter ruguli- 

 formi. Frondes lanceolatae, 100 cm. superantes, acuminatae, profunde 

 2-pinnatifidae; rachis glabra.. Pinnae herbaceae, subtus glandulis 



