The pages of the first volume of Dr. Hooker's Manual on New 

 Zealand plants having passed through the printing-press before the 

 "Chatham-collections became available, the results of the present 

 treatise could not be incorporated into that work, but -will be acces- 

 sible for any appendix to the second volume. The author regrets 

 not having had the advantage of consulting Dr. Hooker's publication, 

 which has not yet reached Australia ; but it may be anticipated, 

 that the recent observations of that illustrious phytographer on the 

 New Zealand plants and those on the Chatham-Flora recorded in 

 this book, have led in many instances to the same conclusions. 



The collections thus accumulated in the Chatham-Islands com- 

 prise 1 29 species of plants, apparently indigenous. Of these 42 are 

 dicotyledonous, representing not less than 32 orders and 37 genera ; 

 20 are monocotyledonous (including a doubtful Galorophus mentioned 

 by Dr. Hooker), and these exhibit 9 orders and 19 genera ; the re- 

 maining 67 plants are acotyledonous. It may however be predicted, 

 that although we are now fully acquainted with the trees and shrubs 

 of these islands, still some phanerogamic herbaceous plants, most 

 likely also several of the ferns common in New Zealand, and certainly 

 an abundance of cryptogamic plants remain still to be discovered. 

 Plants evidently immigrated are however not taken into account ; 

 for instance, Cerastium vulgatum, Potentilla anserina. Taraxacum 

 ofiScinale, Sonchus oleraceus, Solanum nigrum, Holcus lanatus. In 

 addition to these introduced plants Mr. Travers mentions in his 

 journal the English Daisy, the Mustard, the Dock, the Burr, a Poly- 

 gonum (probably P. aviculare) and the Wild Strawberry. Of ferns, 

 inclusive of Lycopodiaceas, we know now 25 as existing in the 

 Chatham-Islands, all identical with species found in New Zealand ; 

 these comprise 14 genera. The other cryptogamic plants collected 

 by Mr. Travers, have not been systematically enumerated in this 

 work, inasmuch as they evidently present an imperfect picture of 

 that part of the Flora of this island-group. May it therefore suffice 

 on this occasion to point out, that the 1 2 Mosses of the collection 

 include representatives of the genera Sphagnum, Rhacomitrium, 

 Macormitrium, Bryum, Funaria, Polytrichum, Hypnum, Hookeria. 

 The only Liehenaster is devoid of fruit. The 9 Lichens are compre- 

 hended in the genera Ramalina, Peltigera, Sticta, Parmelia, Stereo- 

 caulon and Cladonia ; the 20 Algse comprise species of Sargassum, 



