BY R. H. CAMBAGE. 713 



me that there is no gradation between these species, although 

 they have strong affinities. Nor does there appear to be any 

 between E. rostrata and E. dealbata, for in one instance, where a 

 hill of Devonian sandstone comes down near the Lachlan River, 

 I have collected E. rostrata on the river side and E. dealbata on 

 the hill side of the road, about a chain apart, both being typical 

 trees. 



Messrs. Deane and Maiden (Proc. Linn. Soc. N.S.W. Vol. xxv. 

 p. 466) have withdrawn specific rank from this species, and 

 described it as a variety of E. tereticornis. The result of several 

 years of close observation of these U-ees in the field has been to 

 incline me to support their action. 



Altogether the question of the relationship between E. tereti- 

 coruis and E. dealbata seems a difficult one, and my object in 

 offering the foregoing remarks is in order that they may be 

 considered in any future investigation regarding the western 

 Eucalypts. 



Another tree now appearing for the first time is Casuarina 

 quadrivalvis (She Oak and Mountain Oak). In the west this 

 species appears on most of the igneous hills, and seems to prefer 

 them, though it is not restricted to the one formation. Being 

 much in demand as fodder for stock, the continued dry seasons 

 have had the effect of causing this tree to be almost exterminated 

 from some of the hills. It differs from the other Casuarinas of 

 the west in its pendulous foliage and very large cones. 



Amongst others noticed in passing along were : — 



Acacia doratoxylon, which, with very few exceptions, grows on 

 hills, though it does not discriminate between geological forma- 

 tions; it is one of those Acacias that has its flowers arranged in 

 spikes, and not the usual capitula or flower-heads. 



A. homalophylla, which likes a stiff soil on flats. 



A. decora, often called Silver Wattle, although it has not the 

 feather leaf usually associated with the term of Wattle. This 

 species prefers slightly elevated land, and in the month of Sep- 

 tember has a profusion of beautiful " Wattle " blossoms. 

 46 



