BY R. T. BAKER. 



295 



Eucalyptus Dawsoxi, sp.nov. 



(Syn. E. polyanthema, Schau., var. (c), mihi, Proc. Linn. Soc. 

 N.S.W., 1896, p. 448.) 



" Slaty Gum." 



(Plate xxi.) 



A tall tree with a smooth bark, the foliage, branchlets, buds 

 and fruits glaucous. Young leaves broadly lanceolate, 6 inches 

 long and over 3 inches wide, on a petiole over an inch long, very 

 obtuse, glaucous on both sides, venation distinct. Mature leaves 

 mostly short, oblong-lanceolate, very obtuse, rarely acuminate, 

 occasionally reddish in colour, venation fairly distinct, lateral 

 veins not distant, intramarginal vein close to the edge. Peduncles 

 axillary but mostly in large terminal corymbs, exceeding the 

 leaves. Buds on young trees 3 lines long, 1| lines in diameter, 

 sessile or on short pedicels; operculum hemispherical, obtuse; on 

 mature trees 4 to 5 lines long, 1 line in diameter, the calyx 

 tapering into a filifoi'm pedicel, operculum conical, acute. Ovary 

 domed at the summit. Stamens all fertile, inflexed in the bud, 

 filaments thick in proportion to the diameter of the anthers. 

 Anthers very small, cylindrical, rounded at the base and truncate 

 at the top, opening by terminal pores. 



Fruit small, turbinate, pedicel almost filiform, mostly a line in 

 diameter and under 2 lines long, rim thin, capsule sunken, valves 

 not exserted. 



This species is one of the finest representatives of the genus 

 Eucalyptus, whether from a picturesque or an economic point of 

 view. On the whole watershed of the Goulburn River it grows 

 to a great height with a splendidly straight, branchless trunk, and 

 always occurs under the ridges, never being found on the summit 

 nor at the base; and owing to its glaucous leaves it can easily be 

 detected from the dark green foliage of its congeners — the Stringy- 

 barks in this particular instance. 



I was at one time (loc. cit.) inclined to class this species as a 

 variety of E. polyanthema, Schau., owing to the similarity of fruit 



