EUCALYPTUS SIEBEEIANA. 



The trunk is sawn into good timber, and it is also used for posts and rails ; wood among other 

 ■purposes recommended for shafts ; it resembles much more that of our Blue Gum-tree, than that 

 of our Stringybark-trees ; it is hard and when seasoned difficult to cut, but burns well even when 

 fresh. Mr. A. W. Howitt finds the wood of superior quality, light, tough and elastic, used for 

 swingle-trees of buggies, ploughs &c., but it will not endure underground. Mr. Simson further 

 observes, that this species is more branching than any other Tasmanian Eucalypt, very often going 

 off into several large limbs at 20 feet or even less. 



The nearest affinity of E. Sieberiana rests clearly with B. hasmastoma, but the stem-bark of the 

 former is far more ridged than that of the latter ; the veins of the leaves are less spreading and 

 also less prominent, while the fruit is usually longer, more exactly semiovate and never verging 

 towards an hemispheric form ; the red rim of the fruit, significant of the name of E. haemastoma, 

 can also often be observed in E. Sieberiana. The width of the flowerstalk is evidently variable, 

 indeed occasionally it is hardly compressed. E. Sieberiana differs from E. pauciflora, Sieb. (E. 

 coriacea, Cunn.), in the persistency of the stem-bark, in the leaves hardly so shining and not 

 quite so thick, the veins less prominent and also less longitudinal, and not several veins starting 

 together from the base of the leaves, in the flowerstalks nearly always compressed, in the stamens 

 not being all or nearly all fertile, iu rather smaller anthers, smaller fruits often conspicuously 

 longer than broad on generally more extended stalklets. 



The differences, by which B. Sieberiana is distinguished from B. obliqua, are obvious, 

 consisting in the less fibrous and more rugged bark, not coating branches as well as stem as in 

 the latter species, in the less fissile wood, the rather finer veins of its leaves, usually more 

 dilated flowerstalks, the stamens only partially fertile, the fruits upwards less contracted, with 

 ■a much broader rim, usually less suddenly tapering into the stalklets and valves not so deeply 

 inserted. 



Tlie Eev. W. W. Spicer, M.A., in his meritorious " Handbook of the Plants of Tasmania," 

 published last year, refers at page 149 first to this Eucalypt as Tasmanian. 



The traveller Franz Wilhelm Sieber of Prague secured for botanical science this Eucalypt 

 with many other plants of New South Wales in 1823, while collecting for several months in that 

 colony. 



Explanation of Analytic Details. — 1, upper portion of calyx, the lid lifted ; 2, longitudinal section of a 

 flowerbud ; 3 and 4, front- and back-view of an anther ; 5, sterile and fertile stamens in situ ; 6, style with 

 stigma ; 7, longitudinal section of fruit ; 8, transverse section of fruit ; 9 and 10, sterile and fertile seeds ; 11, 

 embryo uncoiled ; 12, embryo in its natural position ; 13, portion of a leaf ; 14, pellice with stomates, the latter 

 very much magnified ; the other figures moderately but variously enlarged. 



