121 



Mr. Walter Gill informs me that he collected a little broken material from a dry 

 fallen limb when in company with Colonel Legge at Cullenswood. " This material gave 

 me sufficient evidence to show that this tree is the same as those that grow here (near 

 Adelaide). I took a photograph which turned out poorly, but I am quite satisfied that 

 the trees are the same as those known here as E. rubida." 



South Australia. 



The following specimens were obtained from Mr. Walter Gill, Conservator of 

 Forests, S.A. 



(a) Kmtpo, near Willunga. 



(b) Near Ambleside Railway Station and other places on the Onkaparinga River; 



Balhanna. 

 I have also 6een a specimen labelled " Yellow Gum," St. Vincent's Gulf (Mueller). 

 Aldgate, large trees near water (R. H. Cambage and J.H.M.). 



AFFINITIES. 



1. With E. Gunnii Hook. f. 



Its most obvious similarity to E. Gunnii lies in the fact that it is a smooth-barked 

 Gum with broadish juvenile leaves ; it may at once be distinguished from that species 

 by the flowers (an arrangement of threes seems to be a constant character of E. Gunnii 

 as far as known) and usually narrower though longer mature foliage. 



The buds of E. Gunnii usually have the operculum only half the length of the 

 calyx-tube. The leaves of E. Gunnii are eaten by stock, and the tree produces " cider " ; 

 from the leaves of E. rubida " manna " exudes abundantly. 



2. With E. Perriniana F.v.M. 



The affinities of these two species are less strong. The juvenile leaves of E. 

 rubida are never perfoliate, nor are the fruits so hemispherical. E. rubida is a much 

 larger tree. 



3. With E. aeervula Hook. f. 



There are connecting links between the normally multiflowered E. aeervula and 

 the normally three-flowered E. rubida. Leaves, buds, fruits are all variable. Instances 

 of this variation have been given already ; additional ones will be cited. 



I have observed E. rubida, e.g., at Wallerawang, with hard, black bark for 10 feet 

 up. At other times it is ribbony right up the trunk and all over. Normally E. rubida is 

 a White Gum. The differences will be better understood when E. aeervula is reached in 

 Part XXVII. 



