692 SOME NEW SPECIES OF EUCALYPTUS, 



The fruits differ from those of E. viminalis in shape, rim, and 

 direction of valves. The trees too are not found near water, as 

 pertains almost invariably with E. viminalis, but on dry, stony 

 ridges. It differs also from that species in the constituents of its 

 oil. 



It resembles E. maculosa, Baker, in the shape of the fruits, but 

 differs from it in the timber, bark and oil constituents. It differs 

 from E. hcemastoma, Sm., in timber, fruits, leaves and chemical 

 constituents of the oil; and from E. aggregata, Deane & Maiden, 

 in bark, fruit, oil and habitat. 



Its specific characters differentiate it from any of the other 

 smooth-barked species. Of the rough-barked Eucalypts its fruits 

 are often not unlike those of E. fastigata, Deane & Maiden, and 

 E. Smith ii, Baker. 



The specific name refers to the copious exudation of a milky 

 substance from the stem when the tree is cut at certain seasons 

 of the year. 



Timber. — A very pale-coloured, whitish timber, fissile, only 

 used for fuel, much softer than that of E. ?ice?nastoma. 



Oil. — The yield of oil was -541. It is not a commercial oil at 

 present, as it contains but a very small quantity of eucalyptol. 

 No phellandrene is present. 



The specific gravity of the crude oil was ;8826 at 15° C; of the 

 rectified oil -8788. 



The crude oil has no rotation, while the rectified oil had a 

 rotation of 1° in a 100 mm. tube. 



A sample of oil from this species, obtained from Charley's 

 Forest, Braidwood, was almost identical with that from Ilford in 

 constituents and physical characters (H. G. Smith). 



Eucalyptus polybractea, sp.nov. 



" Blue Mallee." 



(Plate xlvi., figs. 7-8.) 



A glaucous Mallee, with quadrangular branchlets. 

 Leaves lanceolate (those on the early shoots lanceolate to 

 oblanceolate), erect, rarely falcate, not oblique; narrow, under 6 



