BY R. T. BAKER. 693 



lines broad, mostly 3 inches long, acuminate, often with a recurved 

 point; midrib raised on the underside, giving the leaf a strong 

 resemblance to that of an Olea, not shining; intramarginal vein 

 removed from the edge, lateral veins oblique, spreading, finely 

 marked, only occasionally distinctly pronounced; petiole about 3 

 lines long. Oil glands very numerous. 



Peduncles axillary, short, 2-3 lines long, angled, with from 8-12 

 flowers. Buds in the early stage of development angular, sur- 

 rounded bff numerous acuminate, glabrous, ribbed, whitish bracts, 

 short, 1 to U lines long, glaucous. Calyx conical, tapering into 

 an exceedingly short pedicel. Operculum obtuse, or only very 

 slightly acuminate, hemispherical. Ovary flat-topped. Stamens 

 all fertile; anthers parallel, opening by longitudinal slits. 



Fruits hemispherical to pear-shaped, 2 lines in diameter, 

 glaucous ; rim thin, slightly contracted, valves deeply set, not 

 exserted. 



Hah. —West Wyalong (R. H. Cambage, L.S.). 



This Eucalypt is one of the Mallees occurring between the 

 Lachlan and Murrumbidgee Rivers, where it is known as " Blue 

 Mallee," to distinguish it from its congeners. 



The dried herbarium material is not easily separated from that 

 of E. viridis, Baker, E. Wnollsiana, Baker, and E. conica, Deane 

 & Maiden, as the fruits of all these species are almost, if not 

 identical ; but this Eucalypt differs principally from them in 

 never attaining tree-form, and in respect of its floral bracts. 



Other points of difference are the angular buds, its glaucous 

 character, shape of the leaves and quadrangular branchlets, whilst 

 the most marked distinctive character of all is its oil, the yield 

 and chemistry of which place it amongst the most valuable of 

 our trees famous for the medicinal qualities of their oils. 



Amongst other Mallees, it differs (1) from E. gracilis, F.v.M.,. 

 and E. dumosa, A. Cunn., in the shape of the fruits and leaves, 

 and the constituents of the oil; (2) from E. oleosa in the absence 

 of the long, well-exserted valves, leaves and chemical constituents. 



In botanical sequence it is placed next to E. viridis t as the 

 fruits and leaves mostly resemble that species. 



