BY J. H. MAIDEN. 399 



which has arisen between the two trees is clearly set forth, and I 

 am but emphasizing Dr. Woolls' remarks in the paper referred to. 

 I have for some years been impressed with their specific differences, 

 and the use of the name leucoxylon in my former paper 

 (P.L.S.N.S.W. [2], iv. 1277) for sideroxylon is a slip of the pen. 



Victoria. — Bark either rugged, hard, dark and persistent, or 

 decorticating and then smooth and whitish outside. The 

 "Victorian Iron-bark Tree" (Mueller, Dichotomous Key)', see also 

 Eiicalyptographia, where it is stated : — " This is the iron-bark tree 

 of Victoria and many districts of New South Wales." This is a 

 slip of the pen as regards Victoria, the tree being not a true iron- 

 bark in that colony, although sometimes having rugged bark about 

 the butt. The Victorian species varies somewhat in bark in 

 different localities. 



Mr. W. R. Guilfoyle, exhibiting Victorian E. leucoxylon timber 

 at the Sydney International Exhibition of 1879, describes it as 

 " Milk white Gum or Spurious Iron-bark. Said to be synonymous 

 with E. sideroxylon, the true iron-bark, although very distinct 

 in appearance." 



It is called "Iron-bark " in Howitt's paper (Trans. R. S. Vict. 

 II. pt. 1). It is called " Box" at p. 215, and "Spurious Ironbark" 

 at p. 226 of the Official Record, Intercol. Exh. of Australasia, 

 Melbourne, 1867, a scientific publication of great value. 



South Australia. — Figured as the "Blue Gum" in J. E. Brown's 

 " Forest Flora of S. A." The specimens on which the species-name 

 leucoxylon was founded by Baron Mueller, were obtained from 

 near Adelaide. Known also in South Australia as "White Gum." 



" On the matured trees the bark upon the stem is hard, woody, 

 rugged, and of a dark bluish-grey — sometimes almost black — on 

 the surface and brown beneath ; it falls off in curled, broken up, 

 longitudinal pieces two or three feet long, and from a-half to one 

 inch in thickness " (J. E. Brown). This is, of course, quite 

 different to an ironbark. 



Queensland. — The following note on a Queensland form of 

 leucoxylon has no direct bearing on the point at issue (viz. 



