M7 



77. Eucalyptus parvifolia. 



U 11 C . Proc. Linn. Soc., N.S.W., [909, p 



Systematic. A small umbrageous tree, usually 20 to 30 feet in height, 

 bark smooth, grey. Abnormal leaves ovate-lanceolate, op] osite, de< ussate, under 

 1 inch long, paler underneath. Found flowering in opposite leal stage. Normal 

 leaves linear-lanceolate to lanceolate, crowded, often opposite, under • inches 

 long, acuminate, shortly petiolate; venation not prominent, intramarginal vein 

 somewhal removed from the edge, lateral veins spreading, moderately oblique. 

 Peduncle- axillary, 1 to 2 lines long, with radiating heads of firvi to S( en flowers. 

 Bud- sessile; calyx tube sub-cylindrical, 1 1 lines long and twice or more than 

 twice as long as the conical oj erculum. 



Fruit. Globular, truncate, sessile ; rim thin ; valves 

 not exserted ; 2 lines long and 2 lines in 

 diameter. 



They very closely resemble those oj E. stellulata, so 

 that these two trees cannot be separated by their fruits. 



Habitat. Kybean River, Monaro, New South Wales, at an 

 altitude of 3,500 feet. 



REMARKS.- -TiiU species is primarily separated from its congenei /. slellitlata by the leaf venation, 

 partly by its bark, and chemii ilcoi stituents. 



ESSENTIAL OIL. — Material of this species for distillation was obtained 

 from Kybean, X.S.YY., in December, eqo8. 



The yield of oil was 07 per cent. The crude oil was of an amber colour, 

 and had an odour resembling the cineol-pinene oils. It was rich in cineol, 

 contained pinene, but phellandrene was absent. The small amount of ester was 

 probably geranyl-acetate. The first distillate contained the volatile aldehydes 

 valeraldehyde and butaldehyde. Tin- oil is a good one of the cineol class, and it 

 is unfortunate that the yield i> not greater. The rectified oil was yellowish in 

 tint, due to the influence oi the particular phenol presenl ; ibis colour is 

 characteristic of the oils of the typical "Gums." 



The crude oil had specific gravity at 15 C. = 0-9177 ; rotation a D + 3-6 ; 

 refractive index at 20° = 1-4644, and was soluble in I-.2 volumes 70 per cent, 

 alcohol. The saponification number for the esters and tree acid was 56. 



On rectification. 2 per cent, distilled below [69° C. corr.. Between 

 169-193°, 93 per cent, distilled, and between 2/,o-.24o°, 2 per cenl distilled. Thes< 

 traction- gave the following results: 



bir-t fraction, sp. gr. at 15° C. = 0-9155 ; rotation a D + 3-5°; refractive index 



.it 20 - 1-4617. 

 Second fraction ,, ,, =0-9285; rotation dextro-rotatory ; refractive 



index at 20 = 1-4781. 



The cineol. determined by the phosphorii acid method, was 6g per cent, 

 in the crude oil ' ).M.). 



It 1- very probable thai the higher boiling portion contained the liquid 



form 01 eudesmol, particularl) as il was dextr tatory, and no crystalline bod) 



was detei ti d 



