35? 



VI. THE LEAF. 



B.— THE MATURE LEAF. 



Historical. Venation (Chiefly). 



A. Sir James Smith (Trans. Linn. Sec, iii, 288, 1797) was the first author to 

 describe Eucalypts in any number (he described twelve), but he makes no allusion to 

 the venation. 



B. G.Don in " Dichlamydeous Plants," vol. 2, p. 818 (1832) under Eucalyptus 

 (which is mainly a translation of De Candolle's '' Prodromus," iii, p. 216-220, 1828). 



In most descriptions he refers only to the intramarginal vein (see below p. 392). 

 A number of the species referred to by him are not recognised now, but their modern 

 equivalents may be ascertained if desired, by reference to the indexes of the various 

 volumes of the present work. 



1 . The f ollowing refer to the intramarginal vein : — 

 E. resinifera — marginate by a nerve. 



longifolia — marginated by a nerve. 



robusta var. rostrata— girded by a marginal parallel nerve. 

 incrassata — girded by a thin nerve, which is parallel with the margin. 

 persicifolia — with a nearly parallel, very thin, nerve on the margin. 

 punctata — girded by a nerve, which is parallel to the margin. 

 purpurascens var. petiolaris —girded by a nerve at the margin. 

 pilularis — veins confluent at the tops, forming a nerve, which is parallel 

 with the margin. 



radiata — veins very fine, confluent at the apex, and forming a nerve, which 

 is parallel with the margin. 



stenophylla — lateral nerves connected before the margin. 



myrtifolia — same as stenophylla. 



2. The following is a distant reference to longitudinal venation. See p. 394. 



E. hypericifolia— lateral nerves of leaves parallel, connected in front of the 

 margin. 



