792 NOTES ox THE NATIVE FLORA OF NEW SOUTH WALES, IL, 



This species extends throughout the whole length of this State, 

 and in coming southwards from the northern end of New England 

 climatic influences soon drive it on to the western slopes, and 

 before reaching the Lachlan it has spread westerly to Nymagee 

 and Mount Hope, continuing southwards at least to Chiltern in 

 Victoria. Just south of New^ England, however, where the 

 Liverpool Range is lower than most parts of the Great Dividing 

 Range, it apparently crosses to the eastern slopes and continues 

 southerly, though sparingly, along the greater part of the south 

 coast. The question w^iether the depression at the Liverpool 

 Range wholly accounts for the occurrence of this species on both 

 sides of the Great Dividing Range, or whether it may not have 

 extended over a more general level between east and west prior 

 to uplifts in late Tertiar}'- times, requires investigation from a 

 geological as well as a botanical standpoint. 



There are few western Eucalypts w^iich show a more decided 

 preference for sedimentary formations than this Ironbark. West 

 of the Dividing Range it usually occupies the Silurian and some- 

 times the Devonian areas, while on the eastern side it seems to 

 be just as happily placed on the newer sedimentary formations 

 such as Permo-Carboniferous, and the Wianamatta Shales of the 

 Triassic, though so far as my observations go it does not favour 

 the Hawkesbur}'- Sandstone of the latter period. Although it 

 usually avoids all igneous rocks, especially basalt, there are excep- 

 tions to this rule, as for instance at Wyalong and south-westerly 

 from Dubbo, where it is found on decomposed granite formation. 

 Doubtless there are o»ther instances of its growth on various types 

 of igneous rock, though probably plutonic. 



Both the coastal and interior trees have the characteristic 

 black deeply furrowed bark and red timber, but the former often 

 has red flowers, that being the colour of the filaments, while 

 those of the latter are generally creamy-w^hite, the red-flowering 

 tree, according to my observations, being more uncommon in the 

 west. 



Eucalyptus conica, Deane tfe Maiden, a Box tree, was found 

 half-a-mile south-westerly from Tingha at an altitude above sea- 



