NOTES ON NEUROSORIA PTEROIDES. 49' 



SOME NOTES ON NEUROSORIA PTEROIDES (R.Br.) 



Mett. 



By W. Walter Watts, f.l.s. 



With Plates III and IV. 



[Read before the Uoyal Society of N.S. Wales, July 2, 19l9.~\ 



Under the name, Acrostichum pteroides, Robert Brown 1 

 published a brief description of a noteworthy fern from 

 tropical Queensland, the scientific classification of which 

 has not, to this day, been satisfactorily established. K. 

 Domin 2 says, of this fern, that it needs to be investigated 

 anew in ample material, seeing that the data regarding 

 the structure of the sorus are contradictory. Pending the 

 finding of such new material, the following notes will, the 

 writer believes, help to elucidate the problem, and, at the 

 same time, place on record the results of earlier research. 



At the outset, he begs to acknowledge his indebtedness 

 to the Government Botanist of Queensland, Mr. Cyril T„ 

 White, for placing at his disposal the material in the 

 Queensland Herbarium; to Mr. E. E. Pescott, f.l.s., and 

 Mr. O. O. Brittlebank, of the Science Branch of the Vic- 

 torian Department of Agriculture, to the former for the 

 excellent photograph of the fern (Plate III), and to the 

 latter for the painstaking drawings of the nerve-structure? 

 the sporangia, etc. (Plate IV); and, finally, to Miss Lilian 

 S. Gibbs, f.l.s., of London, who was kind enough to copy 

 out and send to him the whole of the valuable matter 

 published by M. Kuhn, 3 in 1869. 



1 "Prodromus," p. 145 (1810). 



2 " Pteridophyta/' p. 147 (1913). 



3 " Botanische Zeitung," Vol. xxvn, pp. 437 ff. 



D— July 2, 1919. 



