— la- 



it is attached with the inner side to the base of the receptacle and for the 

 rest it is free; evidently it is the very rudimentary, apparently wanting 

 indusium, and 1 believe it is not too bold to suppose that the other related 

 „exindusiate" species have a similar ring-shaped line or rudimentary indusium. 



As to the question of renaming those species in Alsophila, I observe 

 that in Cyathea several species have a truly globose indusium deciduous 

 in the upper part but with a persistent, saucer- or ring-shaped base encircl- 

 ing the receptacle. Such species are at full maturity not distinguishable 

 from Alsophila since in Alsophila we have species with a ring-shaped 

 spurious indusium. Therefore 1 think it would be better not to refer to 

 Alsophila the species of Cyathea that have a rudimentary indusium but to 

 Cyathea those species of Alsophila that have a cup-, saucer-, ring- or whorl- 

 shaped spurious indusium and to maintain in Alsophila only the really 

 exindusiate species. 



In doing so the difficulty suggested by Copeland is dissolved and we 

 get for Cyathea the following, partly known, partly new, combinations: 



Cyathea cotitaminans (Wall.), Copel, in Phi'ipp. Journ., IVc, 60; 

 Alsophila glauca, J. Sm. (includ. varieties), v. A, v. R., Mai. Ferns & AH., 

 Supplem. I, 68; Polypodium contaminans, Wall., List, No. 320. 



Var, persquamulifera : Costae supra hirsutae, subtus copiose squamuli- 

 ferae et longe pilosae; squamae inferiores partim longae, subulatae, brun- 

 neae, pilis breviter spinuliformibus, castaneis remote ciliatae, partim parvae, 

 subbullatae, pallide ferrugineae vel ochraceae, longe fimbriato-ciliatae ; 

 sequentes sensim in pilos longos, pallidos, articulatos transientes; pili 

 squamulis paucis, ovatis, bullatis, ochraceis, apice fimbriato-acuminatis 

 intermixti; costulae supra glabrae, subtus copiose longe pilosae et parce 

 bullato-squamulosae ; sori '/4 — '-^U partem segmentorum occupantes. — 

 Sumatra {Mt. Talamau, H A. B. Bunnemeijer No. 961). 



Cyathea saparuensis, v . A . v . R. ; Alsophila saparuensis, v. A. v. R., Mai. 

 Ferns, 38. 



Cyathea alpina, v.A.v.R. (not Roth); Alsophila alpina, v. A. V.R., 

 Mai. Ferns, Suppl. I, 62. 



Cyathea indrapurae, v.A.v.R.; Alsophila indrapurae, v. A. v. R., I.e., 63. 



Cyathea punctulata, v.A.v.R.; Alsophila punctulata, v.A.v.R., I.e., 64. 



Cyathea brevifoliolata, v.A.v.R.; Alsophila brevifoliolata, v.A.v.R., 

 I.e., 64. 



Cyathea palembanica, v .A.v .R.; Alsophila palembanica, v .A.v . R . , 

 I.e., 493. 



