12 SECTION D. 



No. No 



Leaves large, their oildots very fine and numerous ; 

 stem-bark fibrous only near the base, E. regnans. 

 (Probably correctly included in E. amygdalina as a variety by 

 Bentham and Mueller.) 



131. Leaves small, thick, hardly inequilateral, E. santa- 



lifolia. 



(Includes E. pachyloma). 

 Leaves mostly large, inequilateral ... ... ... 132 



132. Stems of young plants and offshoots quite quad- 



rangular, with opposite ovate bluish-white leaves, 

 E. Maideni. 



(I find the above the most striking character in this remark- 

 able species. The typical specimens have rather numer- 

 ous flowers in an umbel, clavate and smooth in bud, with 

 hemispherical but pointed operculum, and a rather long 

 flattened peduncle. But there are forms, especially 

 specimens collected in Gippsland by Mr. A. W. Howitt, 

 that show an unmistakable approach to E. globulus, 

 which in its ordinary form has such a different appearance. 

 In other respects there is an evident affinity with E. 

 goniocalyx. All three species have in their young state 

 quadrangular stems and bluish leaves ; the adult leaves 

 are also somewhat similar in shape and texture. In my 

 opinion, there are weighty reasons against the assumption 

 that we have here a case of hybridisation, but must rather 

 ascribe it to evolution. ) 



Stems of young plants nearly terete... ... ... 133 



133. Veins of leaves very oblique ... ... ... ... 134 



Veins of leaves very diverging ... ... ... 136 



134. Flowers and fruits sessile, E. capitellata. 



Flowers and fruits on short pedicels ... ... ... 135 



135. Operculum conical, E. macrorhyncha. 

 Operculum hemispherical, E. Muelleri. 



136. Flowers mostly three in an umbel, E. viminalis. 



Flowers more than three in an umbel ... ... 137 



137. Operculum nearly hemispherical or shortly and 



bluntly conical ... ... ... ... ... 138 



Operculum conical or acuminate ... ... ... 139 



138. Leaves green, alternate, E. Stuartiana. 

 (Distinguished from E. viminalis when the latter has more 



than three flowers in an umbel by the fibrous bark and 

 roundish seedling leaves, E. viminalis having either a 

 smooth or a rugged but never fibrous bark and lanceolate 

 seedling leaves.) 

 Leaves ashy-grey, sometimes opposite, E. dealbata. 



139. Operculum mostly ending in a beak, E. rostrata. 

 (Some varieties have a blunt operculum and form a con- 

 necting link between this and E. tereticornis. E. exserta 

 is a variety. ) 



Operculum conical, not beaked ... ... ... 140 



