342 SUPPOSED HYBRIDISATION AMONGST EUCALYPTS, 



the edge. Texture of the leaf coriaceous and tough, like that of 

 E. siderophloia. 



Buds. — The bnds and stamens appear to us not to differ from 

 those of E. siderophloia. 



Operculum conical, like that of E. siderophloia, but we have not 

 observed the operculum much to exceed the calyx, v^^hich is very 

 commonly the case in E. siderophloia, especially in var. rostrata. 



Fruits nearly semiovate, often slightly angular, usually pre- 

 senting a good deal of resemblance to those of E. siderophloia, but 

 the valves (which usually number four, and sometimes five) 

 scarcely exserted. About three to four lines in diameter, and 

 not contracting at the orifice. Sometimes so subcylindrical in 

 shape as to exhibit considerable resemblance to those of typical 

 E. hemiphloia, F.v.M. 



Range. — Bankstown and Cabramatta districts, thence across 

 country to Penrith. It has also been found at Lue on the 

 Mudgee line. 



E. Boorrnani seems to have its closest atfiiiity to E. drepono- 

 phylla. Further investigations may even cause it to be looked 

 upon as a southern form of the Queensland species; but the latter 

 is always described as an Ironbark, and the fragments of the 

 type that we have hitherto had the opportunity of seeing present 

 differences in the fruit and leaves which make us feel that the 

 interests of science will best be served in giving the former a 

 name. 



E. Boormaui, when young, has the flattish bark often seen in 

 young E. siderophloia. The foliage, inflorescence and fruits show 

 obvious resemblance to that species, while its resemblances to E. 

 hemiphloia have in our former paper (xxv., 111-2) and in this 

 been dwelt upon. 



E. Boormaid has undoubted affinity to our E. ajffinis, particu- 

 larly in the timber and bark. At Lue they are both called 

 Black Box, and, as far as specimens in our possession go, we 

 cannot separate the trees, either in timber or bark; the leaves 

 also are much alike in texture and venation, but the fruits are very 

 dissimilar. E. affinis itself may be looked upon by some botanists 



