446 R. H. CAMBAGE. 



plains, but prefers a lighter, soil. This may account for its 

 absence from Richmond Downs and around Winton. In New 

 South Wales the eastern margin of the habitat of this 

 species roughly coincides with the western margin of E. 

 albens Mig., (the White Box of the western slopes), but in 

 places the boundaries overlap. 



The Oymbidium, which was noticed growing in the hollow 

 portions of trees at various points most of the way, was 

 probably C. canaliculatum R.Br., which species is found in 

 a somewhat similar though slightly cooler climate around 

 Boggabri in this State. 



%■ ^ ^ >fc $z j}c ^ 



During the whole of the hurried journey described in this 

 paper, and which covered some of the drier rather than the 

 moist portions of Queensland, only about thirty-one species 

 of Eucalyptus and forty species of Acacia were noticed, 

 numbers which would be greatly exceeded for both these 

 genera in a very much shorter distance in any portion of 

 the eastern coast of Australia. It is of interest to note, 

 as contrasting the flora of this tropical climate with that 

 of the cooler southern latitudes, that not a single species 

 of Eucalyptus or Acacia mentioned in this list is recorded 

 for Tasmania. 



In travelling over the western portions of tropical Queens- 

 land, and noting its general flora in which are many adaptive 

 xerophytic characters, one cannot help being impressed 

 with the hardiness of the vegetation in such a hot climate 

 with, in places, only a moderate rainfall. The question 

 naturally arises, how do the seedlings manage to survive ? 

 The explanation appears to lie in the fact that the seeds 

 germinate in the wet season during the early part of the 

 year, and the seedlings grow rapidly during the moist 

 period, so that by the end of the dry though temperate 

 winter, many of them are sufficiently strong to survive 



