ON SOME REPUTED AUSTRALIAN EUCALYPTUS HYBRIDS, 491 
of the world, but one cannot explain the label. To begin 
with, Brisbane Water is in the north, and not in the southern 
districts. The specimen may have been received as 
‘*Flooded Gum,’’ and the description of a second Flooded 
Gum (saligna) other than Benthami, tacked on to it. The 
specimen was not exhibited in the previous or Paris 
Exhibition. 
Affinities. 
1. With E. viminalis, Labill. The new species has by 
most observers been confused with E. viminalis and being 
a White Gum with rough bark at butt, and growing on 
river flats and banks of rivers explain why this view has 
been so prevalent. But it is more erect in habit, E. 
viminalis having more pendulous branches and more dis- 
tinctly ribbony bark. 
The new species has broader juvenile leaves, the foliage 
is sub-glaucous, the flowers are smaller and never in threes, 
the fruits are of a different shape, with the valves never as 
exsert as those of H. viminalis. 
2. With HE. Macarthuri, Deane and Maiden. H. Benthami 
is a tall, rather erect tree with a somewhat thin canopy; 
E. Macarthuri is a smaller tree with a rather umbrageous 
head. The bark of HE. Macarthuri is rough, somewhat 
box-like, but very woolly; that of H. Benthami being smooth 
in the upper portion (a White Gum) and flaky at the base. 
Sometimes it is wholly smooth. 
The juvenile foliage and buds are sub-glaucous in H, 
Benthami; the buds of H. Macarthuri are often shining 
and slightly smaller than those of H. Benthami. 
The trees referred to as E. Macarthuri at Werriberri 
Creek in Proc. Linn. Soc. N.S.W., xxxvi, 553, (1911) are 
E. Benthami. 
