602 , THREE NEW SPECIES OF MYRTACEJE. 



The leaves differ from its congeners in having a bright yellow 

 or pale colour, due to the presence of a dye, probably Myrti- 

 colorin. The terminal branchlets are very slender, and the 

 fruits are supported on filiform peduncles. All these character- 

 istics, as well as the timber and oil, differentiate it from other 

 Angophoras. Another feature, which might be noted, is that 

 the leaves are often attacked by an insect, which entirely alters 

 their normal conformity. 



At Bingara, it is found as a medium-sized tree, 60 feet high, 

 and 4 feet in diameter, growing in the vicinity of creeks and 

 rivers, and has a woolly, somewhat "Box-like" appearance (C. 

 Laseron); whilst, at Woodburn, it is a large, spreading tree, with 

 very rough bark(W. Bauerlen). 



Timber. — Hard, open-grained, yet interlocked timber, of a 

 light grey, pale chocolate, or fawn colour. 



No local use appears to be made of the wood, so that data are 

 not available as to its adaptability or otherwise in Technology. 



Oil.— My colleague, Mr. Henry G. Smith, F.C.S., states con- 

 cerning this oil : — The oil of this Angophora does not differ, in 

 general constituents, from that of the other oil-yielding species of 

 Angophora. The yield of oil, from leaves and terminal branch- 

 lets, was 0-13 per cent., and this consisted principally of dextro- 

 rotatory pinene with a high rotation, two esters of geraniol 

 (geranyl-acetate and geranyl-valerianate), free geraniol, a small 

 amount of volatile aldehyde, together with a low-boiling ester, 

 which had the odour of amyl-acetate, and a small amount of 

 sesquiterpene. Neither cineol nor phellandrene was present, 

 nor do these constituents occur in the oils of the Angophoras. 



EXPLANATION OF PLATES XXV. -XXVI. 



Plate xxv. — M. Maidtni. 

 Fig. 1. — A flowering branchleb with leaves, etc. 

 Fig.2. — Individual flower (enlarged). 

 Fig. 3. —Spike of fruits. 



Plate xxvi. — M. Smithii. 

 Fig. 1. — Flowering branchlet, showing leaves, and unexpanded fruits. 

 Fig.2. — Individual flower (enlarged). 



Fig.3. — Stamens, showing attachment at base in bundles. 

 Fig.4. — Fruits in cluster on branchlet. 



