S66 



AFFINITIES. 



Although on the probationary list for nearly twenty years, its specific rank was 

 confirmed when seeds from a large number of specimens attributed to E. dealbata were 

 sown, and a very fine series of seedling plants compared. Two series of seedlings 

 resulted, the true E. dealbata with broad leaves, and E. Dwyeri with narrow ones. We 

 have here an illustration of the desirability of raising seedlings as a check on deter- 

 minations otherwise obtained. It may be mentioned that the leaves of the seedlings 

 of E. pumila are, like those of E. dealbata, broad. Further details will be given when 

 the seedlings of a large number of species are described, when it will be found that in 

 the Bilobse, E. Dwyeri comes in Series No. 21. " Narrow lanceolate," while E. dealbata 

 and E. pumila are in No. 23 " Semi-terete to quadrangular; petiolate (elliptical to 

 orbicular). 



1. With E. dealbata A. Cunn. 



Compare Plates 134 and 135, Part XXXII. An outstanding difference between 

 the two species lies in the broad juvenile foliage of E. dealbata; the pedicels of the 

 same species are more defined, the calyx-tubes and fruits more hemispherical, never 

 sub-cylindrical, while the opercula are more conoid, and. when elongated, never as 

 much as in E. Dwyeri. E. dealbata is a small or moderately large tree, probably never 

 a Mallee; its bark is rougher and the timber red. 



2. With E. pumila Cambage. 



See Plate 206, Part L. Both species are Mallees, but the juvenile leaves of 

 E. pumila are broad, and those of E. Dwyeri narrowish. The peduncles and pedicels 

 of the former are shorter and thicker, and the pedicels are more sharply defined from the 

 hemispherical fruits, while the rims are more domed. The buds of E. pumila are more 

 attenuate, both as regards opercula and calyx-tubes. 



3. With E. siderophloia Benth. 



A suggestion, as regards fruits, is the above, and E. sideropMoia is not closely 

 related to E. dealbata. 



Specimens from Arrarowine, Borah Creek, Pilliga Scrub, a small white gum 

 with smooth bark, labelled E. siderophloia by Dr. H. I. Jensen, No. 151, have fruits 

 very similar in shape to those of some forms of E. siderophloia. 



