54 NOTES ON NATIVE FLORA OP NEW SOUTH WALES, VI., 



to both. This affords another instance of the gradual adapta- 

 bility of plants. 



The geological conditions required by these two trees are,, 

 however, quite distinct, and C. Luehmanni is never associated 

 with Eucalyptus capitellata, though they may occur on their 

 respective formations only a few miles apart. 



The buds of Eucalyptus macrorrhyncha were noticed to resemble 

 those of E. capitellata, and there was an absence of the suddenly 

 taperiDg pointed opercula so common on the southern parts of 

 the Western Slopes. 



The occurrence of E. melliodora (Yellow Box) in this locality 

 is not surprising, for its versatility in withstanding botli heat 

 and cold has often been noticed. It, however, prefers a western 

 to an eastern influence in this State. 



Both E. viminalis and E. rubida (White Gums) were seen 

 near Stannum; and in the absence of their distinctive " sucker" 

 leaves, which are narrow-lanceolate and orbicular respectively, 

 these trees look very similar in the forest. Although they are 

 often found growing side by side on basalt and other formations, 

 such was not the case here, for while E. viminalis flourished on 

 the andesite, it appeared to be absent from this particular sandy 

 granite formation. E. rubida, however, was well distributed 

 over the granite area, but not noticed on the andesite. 



E. Andrewsi, the Blackbutt of northern New England, is 

 plentiful on the granite, but seems absent from the andesite 

 around Stannum. This tree appears to be one of the principal 

 Eucalypts found on this class of acid granite, and is also one of 

 the largest. Although it occurs practically all over New Eng- 

 land, and comes south on to the high range which separates the 

 waters of the Manning from those of the Hunter, and has been 

 collected by Mr. Andrews near Copeland, there is so far no record 

 of its having crossed to the southern side of the Hunter and 

 Goulburn valleys. The species may therefore be useful in con- 

 nection with any research into the relative ages of the Hunter 

 valley and certain members of the genus Eucatyptus. Though 

 E. Andrewsi is of comparatively large size west of the Main 



