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Mountains, or at the foot of cliffs in fairly good soil, is a straight-growing, tall, 
White Gum, with a little rough bark at the butt, and with long ribbons on the 
lower part of the trunk. Hence I have heard the tree called “ Ribbon Gum,” but 
is not to be confused with E. viminalis, the species that usually bears that common 
name. It is simply a giant form of E. Luehmanniana , exhibiting that species in its 
best development. The Mountains form is sometimes known as “ Yellow Gum” 
and “White Gum.” 
Synonyms.— 
1. E. stricta, Sieb. var. Luehmanniana, F.v. M 
2. E. virgata, Sieb. var. Luehmanniana, F.v.M. 
3. E. rigida, Sieb. var. Luehmanniana. F.v.M. 
Var. altior, Deane and Maiden. 
4. E. oreades, It. T. Baker. 
5. E. virgaia, Sieb. var. altior, Deane and Maiden. 
Leaves. —Messrs. Baker and Smith (“ Research on the Eucalvpts”) give the 
following notes on the oil of E. oreades :— 
Specific gravity 
at 15° C. 
Specific 
rotation [a] d. 
Saponification 
number. 
Solubility 
in 
alcohol. 
Constituents found. 
0-8869 
-25-6° 
812 
1 vol. 80% 
Phellandrone, eucalyptol, peppermint ketone, 
sescpiiterpene. eudesmol. 
Timber. — Only the Blue Mountains form becomes a timber-tree, and it is 
used for rails and sucli-like purposes, for it is an excellent splitter. It is also used 
for building purposes. It does not come much into competition with the coast 
timbers, and hence its comparative value lias not been very accurately determined. 
Size .—This has been already referred to. 
Habitat. —The typical form is restricted, so far as is known at present, to 
the neighbourhood of Port Jackson and of the National Park (a few miles to 
the South). Mr. R. H. Cambage has collected it as far north as Berowra; I do 
not know a more northerly locality. 
Variety altior. 
Pound in the valleys or on the taluses of the hills of the Blue Mountain 
Range from Springwood higher. 
Also at Mount Warning, near the Queensland border, at an altitude of over 
3,000 feet (W. Eorsyth). A tree there of 30-10 feet. So far I do not know any 
connecting localities; these should be looked for. 
