I "J 



87. Eucalyptus goniocalyx. 



(F.v.M., inFragm., vol. n. |£, i s '>o.) 

 A Mountain Gum. 



Systematic. A very tall tree with a smooth hark, except for a few 

 feet at the base, found mostly on basalt and granite ridges. Abnormal leaves 

 cordate, sessile, acuminate, 6 inches long and 2 inches broad, dark-coloured above 

 lightish underneath; branchlets square. Normal leaves lanceolate, falcate 

 sometimes as much as 2 feet long and 3 inches broad; venation fairlv distim t, 

 intramarginal vein removed from the edge. Peduncles axillary, few, undei 

 1 inch long, flattened. Buds angular, sessile or shortly pedicellate, 7 to 8 lines 

 long; operculum shortly acuminate, obtuse. 



Fruit.- Ovate-truncate, oblong or hemi- 

 spherical, pedicellate, only occa- >, 

 sionalh sessile; rim countersunl ; '^aRT 

 valves inserted or, when hemi- ■'s&ig 

 spherical, the valves are slightly 

 exserted ; about 6 lines long and 

 4 lints in diameter. 



The pyriform fruits closely resemble those 

 of E. obliqua and E. Delegatensis <.»,/ 



somxchai E. regnans. 77/:' hemispherical 

 form is very much like those of Tristania 

 i onferta, a non-Eucalypt. 



Habitat. Coast range from the Blue Mountains, New 



South Wales, well lulu Victoria and Smith 

 Australia. 



REMARKS.- -I In- specific nam.- in this um 1 is not a good one, in (hat n applii - mui h betti i t<> quite 



half-a-dozen other Eucalypts and i1 is owing t" this tact, thai several g 1 species have in i in en con- 



founded with it It is another instance where morphology fail-, in tin- classification "t I ucalypts "Mountain 

 Gunr' is one of the finest of our forest trees, but, unfortunately, is sometimes found in inai ullies. The 



close-grained, interlocked, pal< coloured, and very durable. The timb this 



species from all others that have From time to time been i onfounded with it Mueller's plate of this species in his 

 Eucalyptographia appears to include specie other than / \ >caly%. 



ESSENTIAL OIL. Leaves and terminal branchlets foi distillation were 

 obtained from Monga, N.S.W., in August, i.X<;8. The yield oi oil was 0-96 per 

 cent. The crude oil was lemon-\ ell< iw in colour, and had an odour resembling 

 those of the richer cineol-pinene Eucalyptus nils. The presence oi volatile 

 aldehydes was pronounced. The oil oi this species was rich in cineol contained 

 dextro-rotatory pinene, but phellandrene was absent. Eudesmol was present in 

 the crystallised form, and the fourth fraction consisted largely oi that con- 

 stituent, together with the sesquiterpene. On standing some time the crude 

 oil became turbid, eventually depositing a whitish powdery substance. Many 

 of the oils oi this class oi Eucalyptus form this deposil on keeping, although 

 quite clear when freshlv distilled! s , the article dealing with this substance 

 in this work. 



