LEPTOSPERMUM AND ITS ESSENTIAL OIL. Via 
accounts for the limited number of plants and restricted 
areas. 
In January 1917, Mr. R. W. Challinor collected some 
additional fresh material from Copmanhurst, and in 
November 1917, Mr. Cheel supplemented this, and, as a 
result of our investigations, we are now able to state that 
the oil from the leaves of the cultivated plants agrees in 
every way with that from the original plants. Its nearest 
ally seems to be L. flavescens var. grandiflorum Benth., 
but from this the new species may be distinguished by the 
more obtuse leaves, which have a distinctly fragrant citron- 
like odour, and the smaller flowers and different habit of 
growth. It is interesting to note that L. flavescens var. 
grandifiorum is chiefly found in the beds of creeks and 
rivers, and seems to be confined to Port Jackson and 
southern localities. The typical form of L. flavescens also 
seems to be absent from the neighbourhood of Copmanhurst. 
There is, however, an abundance of L. flavescens var. 
microphyllum in the neighbourhood of Copmanhurst; in 
fact this latter seems to be common in the northern parts 
of this State and Queensland, but it is quite distinct, and 
cannot in any way be confused with L. citratum. 
The distribution is as follows:—New South Wales— 
Copmanhurst (Rev. H. M. R. Rupp, August 1911; G. 
Savidge, December, 1912 (in flower); HE. Cheel, Dr. T. 
Guthrie, and A. D. Ollé, September 1916). 
Queensland—Springbrook, Macpherson Range (OC. T. 
White). 
The Essential Qil. 
The oil obtained from this species of Leptospermum is 
of a pale amber colour, and possesses a strong, pleasant. 
modified lemon odour, suggestive of the principal constitu- 
ents, which have now been identified as citronellal and 
citral. The crude oil contains 907% of these two aldehydes 
L—June 5, 1918. 
