NEW OR INTERESTING MALAYAN FERNS 11 



\ :•' 



BY sV/^ 



Capt. C. R. W. K. VAN Alderwerelt van Rosenburgh. CA^ii 



ISOSPORE FILICALES. 



Adiantum s e r r a t i f o 1 i u m, v. A. v. R., in Bull. Btz., /P/2, VII, 

 1; A Hallieri, Rst., in Mededeel. Rijksherb,, No. 31, 1. 



A I s o p h i I a k e n e p a i a n a, v. A. v. R. ; A. Hallieri, v.A.v.R. 

 (non Rst., 1917), in Bull. Btz., 1918, XXVIII, 2. 



A I s o p h i 1 a h e t e r o m o r p fi a, v. A. v. R., Bull. Btz., 1914, XVI, 1 ; 

 Mal. Ferns & Ail., Supplem. I, 56. 



V a r. decomposita: A forma typica differt stipitibus basibus 

 parsistentibus squamoruin demum punctato asperis; piniiis reductis 2- 

 piniiatis; plnnis normalibus pinnulis angustioribus. — Sumatra (H. A, B. ^ 

 BiJnneineijer, Boekit Tinggi near Mangani No. 3047; Brani, Agam No. 

 3372). 



Alsophila squamulata (Bl.), Hk., Spec. Fil., I, 51; v.A.v.R. 

 Mal. Ferns, 33; Supplem. I, 56; Gymnosphaera squamulata, BL, Enum. 

 PI. Jav., II, 243. 



Ali the spécimens occurring in tlie Buiteiizorg Herbarium hâve tlie 

 costules of the ultimate segments provided beneath with 2 or more (rarely 

 0—1) short, acute, pale setae. 



Alsophila p e r s q u a m u 1 a t a, v.A.v.R., Bull. Btz., 1918, 

 XXVIII, 1. 



This species is nearer A. glabra Hk. than A. squamulata //A:.— Ultimate 

 segments entire or nearly so, the costules beneath without setae. — H. A. B. 

 Bunnemeijer's No. 5423 from Sumatra {Mt. Talang Laras Tulang) has the 

 stipe castaneous, densely scaly, the scales narrowly linear-triangular, brown, 

 with a paler, erose margin, those of the upper side rather persistent, of 

 the under side deciduous. with a persistent tuberculiform base. 



Alsophila glauca (Bl.), J. Sm., in Journ. of Bot., III, 419; v. A. 

 v. R., Mal. Fdrns, 41; Supplem, I, 68; Gnoop/zora G/auca, 5/., Enum. PI. Jav., 



y'' 



