II.— B T A N Y. 



Akt. XIV. — Revised List of New Zealand Seaioeeds. — 



Part I. 

 By Egbert M. Laing, B.Sc. 



[Read before the Philosophical Institute of Canterbury, 4th October, 1899.] 



Plates V.-VII. 



The following list is based chiefly upon the work of Professor 

 J. G. Agardh, and to a large extent follows the order of his 

 " De Algis Novae-Zealandiae mariuis." No general account of 

 the New Zealand seaweeds has been published since 1864, 

 when Hooker's " Handbook of the New Zealand Flora " was 

 issued. Agardh's annotated list, referred to above, appeared 



, o , 



in the Lund Univ. Arskrift, torn, xiv., 1877. It is to be 

 hoped that the following paper will give New Zealand students 

 a clue to the w-ork that has been done since that date, and will 

 also lay the foundations for a knowledge of the distribution of 

 our species within New Zealand. No attempt is made in it 

 to deal with external distribution, or to give an extended 

 synonymy of the species. It will, however, be found that the 

 list increases the proportion of endemic species, largely because 

 earlier algologists somewhat hastily identified similar forms 

 with European species, as, for example, in the genera Poiyliyra 

 and Ulva. 



They also too frequently considered such names as " New 

 Zealand," " x\ustralia," "East Coast" as sufficiently descrip- 

 tive of the habitat. This led to the inclusion, particularly m 

 Hooker's Handbook, of a number of Australian species in our 

 list, and still leads to doubts as to the acceptance of other 

 species not recently collected. In this revision, therefore, I 

 have not included any species of Harvey which have not been 

 accepted by Agardh or collected subsequently to the publica- 

 tion of the "Flora Novae-ZealandiaB." On this ground also 

 species endemic to the Auckland or Campbell Islands have 

 been excluded, as no recent collections have been made in 

 these groups. My own collections have been made almost 

 entirely on the eastern and southern coasts of both Islands, 

 and include stations intermediate between Mongonui in the 



