102 C. HALL. 



seedling is also slender and grows slowly. From close and 

 extensive field knowledge in the Oounty of Cumberland, 

 extending over many years, I have found all degrees of 

 gradation between A. subvelutina and intermedia. In its 

 most typical form the former is to be found growing by 

 creeks and rivers and on deep alluvial flats. When seen on 

 the hillsides, one frequently finds a divergence from type, 

 the leaves are narrower and longer, and tend to lose the 

 juvenile sessile form, and to become petiolated. This is 

 especially so in the terminal branches of old trees, but 

 even on the banks of the Parramatta River, one can find 

 trees less subvelutina-like than others. 



A. intermedia grows most characteristically on the 

 Wianamatta Clay where it is shallow, and the roots can 

 penetrate readily through to the Hawkesbury Sandstone as 

 found to the north of Parramatta, occurring in association 

 with Eucalyptus saligna, acmenoides, punctata and 

 pilularis. It is not till the seedlings are twelve months old 

 that they can be distinguished from those of A. subvelutina, 

 and sometimes even not till long after that. As in the adult 

 stage, these two species are found to be almost identical 

 in buds, fruit, flowers, timber, bark and chemical constitu- 

 tion, it will be seen that the only salient difference is in the 

 adult leaves. 



In the Angophoras an interesting gradation is to be found 

 in the juvenile leaves, those of A. cordi folia being small, 

 ovate, or even orbicular, then in A. subvelutina and inter- 

 media, they are longer but still ovate, in A. lanceolata 

 they are lanceolate, in A. melanoxylon they are narrower, 

 and in A. Bakeri narrowest of all. 



While all the juvenile foliage is sessile and cordate, and 

 in A. cordi folia, subvelutina and melanoxylon this character 

 is retained through life, in A. intermedia, lanceolata and 



