570 THE EUCALYPTS OF PARRAMATTA, 



The buds are not unlike those of E. squamosa Deane and 

 Maiden, but that is the only resemblance to this species. 



From var. lanceolata M. T. Baker and H. G. Smith, of E. 

 tereticornis (syn. E. Seeana Maiden), it differs in the shape of the 

 fruits, timber, and primary leaves. 



From E. dealhata, it differs in having the secondary or mature 

 leaves much darker in colour, and the intramarginal vein closer 

 to the edge; the pedicels are longer, and the rim of the fruit 

 rounded instead of truncate; the primary or juvenile leaves, too, 

 are quite different from the glaucous ovate-lanceolate ones of E. 

 dealbata, the timber of which is also more open in the grain, and 

 of even less value. 



U'ith regard to the classification of the leaves, I have pre- 

 ferred to describe them under three headings, viz., seedling leaves, 

 including the cotyledons and the first 8 or 10 pairs following 

 them; primary or jtivenile leaves, including those we usually find 

 in the young tree, on true suckers springing from the roots and 

 base of the stem, on shoots springing from the butt of the trunk 

 or branch when the tree has been cut down or a branch has been 

 lopped, and on adventitious shoots springing from the trunk and 

 larger branches; and lastly, secondary or mature leaves, those 

 which occur on the mature tree. In this way, we can best char- 

 acterise the heterophylly which is so typical of the Eucalypts. 

 The terms primary or juvenile seem, to me, preferable to hori- 

 zontal, sucker, or abnormal as applied to the "young state" 

 foliage. Horizontal, used much by continental writers, especially 

 in describing E. globulus, is quite wrong, because, when the 

 young leaves are petiolated, they, in most cases, very early tend 

 to assume the vertical position. The term abnormal, too, is 

 scarcely suitable. The milk dentition of children is, in some 

 respects, comparable, and one would hardly call this the abnormal 

 dentition. The term "sucker," too, applies to one condition in 

 which these leaves occur, but omits the others. 



In conclusion, I have to record my grateful thanks to Mr. R. 

 T. Baker for his excellent drawing delineating this species, and 

 his valuable help to me in differentiating and describing it; also 

 to Mr. H. G. Smith, for his report on the oil. 



