23fi 



Uniform species, that is to say, those in which the first stage differs only slightly from the adult. 

 Here also we have two groups, according as the leaves are alternate, or remain opposite during the whole 

 life of the tree. (Additional information has shown that some examples are no longer true, J.H.M.). 



(a) Uniform opposite-leaved species, cordata, cinerea, doratoxylon. 



(b) Uniform alternate-leaved species, resinifera, leucoxylon, and many others. (Naudin, 2nd Mem., 10.) 



7. Howitt, 1891. — Howitt, A. W., in his " Eucalypts of Gippsland," Trans. 

 Roy. S'o'c. Vict., ii, Part I, 81, with, plates (1891), read 10th July, 1890, may fairly be 

 said to be the first Australian botanist who in print insisted on the importance of the 

 juvenile leaves, as aids to diagnosis. He employed the " seedlings and young 

 saplings " chiefly, and they are referred to all through his paper, e.g., pp. 92 and 93, 

 where he is discriminating between the various Stringybarks. See also the figures of 

 seedlings in Plates 8, 9, 10, 11, 14, 15, 16. His nomenclature of species is not always 

 now accepted; indeed his work on juvenile leaves sometimes led to modification of 

 nomenclature. 



8. Woolls, 1892. — Dr. Woolls stated : " The trees which have opposite leaves 

 are chiefly : — 



E. pulverulenta (including E. cinerea). E. odontocarpa^ ., ., 



„ . , 7 . _ , ^opposite or alternate. 



L. meianophloia. Jb . tetrodonta J 



E. cordata. E. gamophylla. 



E. macrocarpa. E. setosa. 



E. perfoliata. E. pruinosa (nearly). 



E. erythrocorys (nearly so). E. doratoxylon (nearly). 

 E. tetragona (nearly so). 



Those which have the leaves opposite when young are : — 



E. viminalis. E. Stuartiana. 



E. pilularis. E. goniocalyx. 



E. globidus. . E. amygdalina. 



{Proc. Linn. Soc. N.S.W., xvi, 64, 1892). 

 Dr. Woolls remarked : — 



To these may be added a few species which appear with opposite leaves simply as seedings ; but 

 it does not seem probable that, even with a more extensive knowledge of the foliage (desirable as such 

 information is) much advantage would be gained in the way of classification. 



It would appear that the above remarks are based on the figures and specific 

 descriptions in Mueller's " Eucalyptographia/' and add little to existing knowledge. 



9. Deane and Maiden, 1895. — After Howitt, Deane and Maiden were the first 

 Australian botanists to systematically employ the juvenile leaves in botanical 

 descriptions; they were certainly the first to insist on them in descriptions of new 

 species. They regularly employed this foliage for diagnostic purposes in their 

 botanical trips as early as 1886, and their series of papers on the genus in Proc. Linn. 



