1 62 2 The Trees of Great Britain and Ireland 



EUCALYPTUS PULVERULENTA, Australian Heart-leaved Gum 



Eucalyptus pulverulenta, Sims, Bot. Mag. t. 2087 (1819); Bentham and Mueller, Flora Austral. 



iii. 224 (1866); Mueller, Eucalyptographia, Dec. viii. (1882); Howitt, in Rep. Aust. Assoc. 



Advance. Set'., Sydney, 1898, p. 517, pi. xxvi.-xxix. ; Deane and Maiden, in Proc. Linn. Soc. 



N.S. Wales, 1899, p. 465, and 1900, p. no; Maiden, in Proc. Linn. Soc. N.S. Wales, 1901, 



p. 547 ; R. T. Baker, in Rep. Aust. Assoc. Advance. Set'., Hobart, 1902, p. 345. 

 Eucalyptus cordata, Loddiges, Bot. Cab. t. 328 (1819) (not Labillardiere). 

 Eucalyptus pulvigera, A. Cunningham, in Field, Geog. Mem. N.S. Wales, 350 (1825). 



A tree, attaining in Australia 50 ft. in height and 10 ft. in girth ; but flowering 

 when in a shrubby state. Bark light brown, persistent, somewhat fibrous. Young 

 branchlets, terete or slightly angled towards the tip, covered with a white glaucous 

 bloom. Leaves (Plate 365, Fig. 3) on adult trees, opposite, sessile, in decussate 

 pairs, ovate, about i in. long and broad ; cordate and clasping at the base ; 

 rounded or acute at the apex, which is tipped with a short triangular point ; similar 

 in colour on both surfaces, which are more or less covered with a whitish bloom ; 

 lateral veins slender, spreading from the midrib at an angle of 60 ; margin reddish, 

 entire or slightly undulate ; oil-glands numerous, mostly pellucid, not prominent or 

 roughening the surface as in E. cordata. 



Flowers glaucous, in axillary umbels of threes ; peduncle stout, glaucous, \ in. 

 long ; calyx-tube sessile, turbinate, dotted with oil-glands, about \ in. long ; operculum 

 conic, tipped with an acuminate point ; stamens all perfect, inflexed in the bud ; 

 anthers ovate, with distinct parallel cells. Fruit turbinate, about \ in. broad at the 

 summit, glaucous, dotted with oil-glands ; rim thick and convex ; capsule slightly 

 included, the three or four valves when open protruding beyond the orifice. 



This species has thinner and smoother leaves than E. cordata, with their margin 

 not crenate ; the operculum of the flower bud is conical and long, while that of E. 

 cordata is shorter and slightly convex ; the fruits are smaller with more protruding 

 valves than in the last-named species. The bark of the two trees is quite different, 

 that of E. pulverulenta persistent and fibrous, while that of E. cordata is deciduous, 

 smooth, and peeling off in ribbons. 



1. Var. lanceolata, Howitt, in Austr. Assoc. Advance. Set., Sydney, 1898, p. 518. 



Eucalyptus cinerea, 1 Mueller, in Bentham, Fl. Austral, iii. 239 (1866). 



Eucalyptus nova-anglica, Deane and Maiden, in Proc. Linn. Soc. N.S. Wales, 1899, P- 616. 



Eucalyptus Stuartiana, Mueller, var. cordata, Baker and Smith, Researches on Eucalypts, 105 (1902). 



Leaves on old trees, lanceolate, 4 in. long, usually opposite, occasionally 

 alternate. 



E. pulverulenta is a native of Australia, where it was discovered by A. Cunning- 

 ham on the Lachlan and Cox's rivers in New South Wales. The typical form of the 

 species is widely diffused in the southern mountainous part of this colony from 



1 The type of E. cinerea comprises Cunningham's specimen from Lachlan river near Bathurst, and Mueller's specimen 

 from Lake George, both localities in New South Wales. These specimens are, I think, intermediate between the typical 

 form of E. pulverulenta and var. lanceolata. 



