317 



Cold localities (e.g., mountain-tops) also check transpiration and induce 

 thickness; thus we have E. coriacea, E. alpina, E. coccifera, E. Gunnii. (These are 

 the species that are included in a list of those that cattle eat in droughty times, but 

 it must be borne in mind that they frequent localities not subject to great droughts. 

 See my " Forest Flora of New South Wales," Part LXX, p. 445.) 



Conversely, we have thin leaves to facilitate transpiration, such leaves being 

 always denizens of brushes, most commonly on the east coast, where the dense growth 

 of the rain forests induces shelter. Very thin leaves, usually with pale undersides, 

 can be found in such species as E. microcorys, E. acmenioides, E. umbra, E. paniculata, 

 E. hotrijoid.es, E. saligna, and many others, the thinness being accentuated in the 

 juvenile foliage. These thin leaves tend to be. horizontal. See pp. 288 and 324. 



It is obvious that, since the texture of a leaf varies according to the 

 ecological conditions of the plant, there is much variation in the records of this 

 character. 



The following grouping of leaves under varying degrees of thickness has a basis 

 of truth in it, but must be studied in a truly philosophic spirit. These lists (as indeed 

 all under Juvenile leaves) are based on examination of actual specimens). 



Very thin. 



E. Bentkami. 



E. Beyeri. 

 E. Bluxlaiifli. 

 E. ficifolia. 

 E. gigantea. 

 E. ftamatoxylon. 



E. acacioides. 

 E. acmenioides. 

 E. alba. 

 E. allior. 

 E. Andrewsi. 

 E. Baueriana. 

 E. de Beuzevillei. 

 E. bicolor. 

 E. Bosistoana. 

 E. Cloeziana. 

 E. coccifera. 

 E. Considcihiana. 

 E. crebra. 

 E. Dalrympleuna. 

 E. Daivsoni. 

 E. Deanei. 



Thin. 



E. latifolia. 

 E. notabilis. 

 E. rudds. 

 E. tereiicornis. 

 E. Watsoniana. 



E. decorticans. 



E. diver sicolor. 



E. diversifolia. 



E. Dunnii. 



E. ekeo.])]iora (sometimes) 



E. fcecunda. 



E. gigantea. 



E. goniocalyx. 



E. gracilis. 



E. Guilfoylei. 



E. Irbyi. 



E. Kirloniana. 



E. Lehmanni. 



E. linearis. 



E. longi folia. 



E. MacartJmri. 



