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42, Eucalyptus paniculata. 



-in .in I i .in- I inn SoC, III, 287.) 

 White Ironbark. 



Systematic. Often a tall tree. Bark hard, compact, furrowed. Abnormal 

 Leaves broadly lanceolate, up to 7 inches long, up to 2 in< hes bin. id. pale on the 

 under side; venation indistinct, lateral veins spreading, intramarginal vein 

 slightly removed from the edge. Normal leaves lanceolate, generally under 

 b inches long, and about 1 inch broad, under surface sometimes pale-coloured; 

 venation distinct, but occasionally submerged in the leai tissue, lateral veins 

 spreading, not very oblique, intramarginal vein removed from the edge. Flowers 

 in axillary or terminal panicles, from six to ten in each umbel. Calyx under 

 3 lines in diameter on a pedicel of about the same length; operculum conical, 

 but generally constricted at its base. 



Fruit. Urn-shaped, pyriform, or inclined to hemi- 

 spherical; rim flat; valves inserted or 



slighth exserted ; varies in length from 

 3 to 4 lines and under 3 lines in diameter, 

 slighth - less in some forms. 



The fruits arc not easily confounded with those oj any 

 other spccws, except perhaps E. intertexta or E. fas i- 

 culosa. Some forms have a halj round ring below the 

 outer edge and valves deeply inserted, whilst at other 



times the valves are exserted. 



Habitat. — Coast district and Dividing Range of New South 

 Wales, Victoria and Queensland. 



REMARKS.- The systematii position oi tins species seems now firmly established, as, owing to the 

 morphological resemblances in herbarium material, H Has in the past been confounded with othi i pei ies espei ially 

 F.. fasciculosa. The common nanus are unfortunate, indicating extremes oi colour, whereas such do not tiold, 

 The wood at first in all cases is whitish, and changes on exposure to a grey or at Pori Mai quarie with dark lines. 

 hence its name " Black Ironbark" in tli.n distrn I The bark is deeply furrowed, hard and of a corky nature, 

 generally with less kino than obtains in other " Ironbarks." It is a slow grower, but a foliaceous tree. 



ESSENTIAL OIL. Leaves and terminal branchlets for distillation were 



obtained from Barber's Creek, New South Wales, in October, kjoo. The yield 

 of oil was o-l per cent. The crude oil was olive-brown in colour, and had a some- 

 what aromatic odour. It contained much pinene, also some cincol, but phellan- 

 drene could not be detected. The oil contained some free alcohol, to which 

 the aromatic odour was largely due. 



The crude oil had specific gravity at 15 C. = o-qoi ; rotation a B + 7-8° ; 

 refractive index at 20 = 1-4744, and was soluble in 1 volume No per cent. 

 alcohol. 



The saponification number lor the esters and free acid as 7-11. A 

 portion oi the oil was acetvlated by boiling with acetic anhydride and sodium 

 acetate in the usual way. The saponification number oi the acetylated oil was 

 560 1, indicating the presence oi a fair amount oi alcoholic bodies. It is probable 

 that the principal alcohol i> not geraniol, but its identity remains to be deter- 

 mined. It will probably be found to be terpineol. 



