8-1 



AFFINITIES. 



1. With E. viminalis Labill. 



Bentham placed this tree under E. viminalis, but this was at a time when, as a 

 general rule, herbarium specimens only were available. I have for many years insisted 

 that the amplest data should be furnished. Unfortunately, as regards some species, 

 they are not available even yet, and we sometimes take risks in naming. 



E. viminalis is a " White Gum," E. Macarthuri a " Woolly Butt " ; the timbers 

 are different. The dried leaves of the former have a pleasant faint, apple-like smell not 

 observable in the latter. The juvenile leaves of the two species are a good deal alike ; 

 the mature leaves of E. viminalis are longer and larger. The buds of E. Macarthuri 

 are smaller, polished, pale brown; the fruits of E. Macarthuri are smaller, often in more 

 than threes, and much smaller than those of E. viminalis, which have a well-defined 

 rim, and well exserted valves. 



2. With E. Stuartiana F.v.M. 



Nor is its affinity close with this species, but I mention it because Woolls confused 

 the two. 



Keference to Plate 101 (Part XXIV) will show that the juvenile leaves of 

 E. Stuartiana are nearly circular; the fruits and leaves of E. Stuartiana are much 

 larger; the habit of E. Stuartiana is more scrambling; the bark and timber are 

 different. 



3. With E. Benthami Maiden and Cambage, Proc. Roy. Soc. N.S.W. xlviii, 418 



(1914). 



E. Benthami is a tall, rather erect tree with a somewhat thin canopy ; E. Macarthuri 

 is a taller tree with a somewhat umbrageous head. The bark of E. Macarthuri is rough 

 somewhat Box-like, but very woolly ; that of E. Benthami is smooth in the upper portion 

 (it is a White Gum) and flaky at the base. Sometimes it is wholly smooth. The 

 juvenile leaves of E. Macarthuri are much narrower than those of E. Benthami, which 

 are broad. 



4. With E. aggregata Deane and Maiden. 



The relations of these two species will be referred to when E. aggregata 

 reached (page 187). 



