BY A. A. HAMILTON. 387 



occasion presents itself for further observations by the numerous 

 devotees of this exceptionally interesting flora. Examples from 

 the localities given in this paper, which were not already in the 

 National Herbarium, have been incorporated in the collection. 



In a paper published in Barron Field's "Geographical Memoirs 

 on New South Wales," Allan Cunningham has given us, "A 

 Specimen of the Botany of the Blue Mountains." "The Flora 

 of Mt. Wilson," was dealt with by Mr. A. G. Hamilton, in these 

 Proceedings, 1899, p. 346. Mr. W. M. Came has treated of a 

 section of the area at a lower elevation, in his " Note on the 

 Occurrence of a Limestone Flora at Grose Vale" (These Proceed- 

 ings, 1910, p.849). "A List of the Plants collected in the 

 Vicinity of the Jenolan Caves," by Messrs. W. F. Blakely and 

 J. C. Wyburd (communicated by Mr. J. H. Maiden), will be 

 found in the Agricultural Gazette of New South Wales, 1901, 

 p. 1390. Messrs. J. H. Maiden, F.L.S., and R. H. Cambage, 

 F.L.S., have mentioned the Blue Mountain flora generally in 

 **The Handbook of New South Whales," published under the 

 auspices of the British Association for the Advancement of 

 Science, 1914, p. 410; also in the botanical, topographical, and 

 geological notes (taken on their carefully detailed traverse; on 

 some routes of Allan Cunningham (Journ. Proc. Roy. Soc. N. S. 

 Wales xliii., p. 123;: and Mr. Cambage has touched upon some 

 aspects of the climatic and geological influences on the flora in a 

 paper read before the Australasian Association for the Advance- 

 ment of Science, at Adelaide (Report xi., 1907). Both Mr. 

 Hamilton and Mr. Carne note, in the respective areas dealt with, 

 that many of the plants listed are not typical of the ordinary 

 sandstone-flora of the mountains; and the same may be said of 

 the Jenolan Caves area. 



Some examples of the hygrophytic Nepean-Hawkesburv flora 

 have attained a considerable altitude by avoiding the direct 

 westerly ascent of the mountains, and following, instead, the 

 courses of the Warragamba and Cox Rivers into the Jamieson 

 and Kanimbla Valleys, from which theyhave crept up the moist, 

 sheltered, brush-clad gorges at Wentworth Falls, Leura, Ka- 

 toomba, Blackheath, and Mt. Victoria, frequently climbing up 



