Eucalyptus 1 6 1 7 



I. Leaves on adult trees, opposite, sessile, cordate at the base. 



1. Eucalyptus cordata, Labillardi^re, Tasmania. Seep. 1620. 



Young branchlets quadrangular, glaucous, roughened with oil-glands. Leaves 

 suborbicular or broadly ovate, 2\ in. long, 2 in. broad ; both surfaces glaucous and 

 roughened with numerous raised oil-glands ; crenate in margin. 



2. Eucalyptus pulverulenta, Sims. New South Wales, Victoria, and Queensland. 



See p. 1622. 

 Young branchlets terete or angled, smooth. Leaves ovate, i^ in. long and 

 broad ; glaucous, smooth ; entire or slightly undulate in margin. 



n. Leaves on adult trees, alternate, stalked. 



* Leaves 5 in, or more in length. 



3. Eucalyptus globulus, Labillardiere. Tasmania, Victoria, and New South 



Wales. See p. 1623. 

 Young branchlets green, quadrangular. Leaves thick, lanceolate, very falcate, 

 6 to 9 in. long, i to \\ in. wide. 



4. Eucalyptus paucifiora, Sieber. Tasmania, South Australia, Victoria, and New 



South Wales. See p. 1631. 

 Young branchlets usually more or less covered with a glaucous bloom. 

 Leaves thick, lanceolate, about 5 in. long and f in. broad, usually falcate ; main 

 lateral veins longitudinal. 



5. Eucalyptus viminalis, Labillardiere. Tasmania, Victoria, South Australia, and 



New South Wales. See p. 1633. 

 Young branchlets green, very slender, with four linear ridges. Leaves 

 narrowly lanceolate, 5 to 6 in. long, ^ to f in. broad, falcate, tipped at the apex 

 with a long slender curved or twisted filamentous point. 



* * Leaves less than 5 in. long. 



(a) Leaves and branchlets glaucous} 



6. Eucalyptus cocci/era, J. D. Hooker. Tasmania. See p. 1635. 



Young branchlets covered with a thick whitish bloom. Leaves lanceolate, 

 2\ to 3 in. long, f to f in. wide, thick in texture, green or glaucous, tipped with 

 a long slender curved point. 



7. Eucalyptus Gunnii, J. D. Hooker. High altitudes in Tasmania, Victoria, and 



New South Wales. See p. 1638. 



Young branchlets more or less glaucous. Leaves ovate-lanceolate, 2 to 2^ in. 



long, f to f in. broad, thick in texture, shining green, tipped with a short 



point. 



(b) Leaves and branchlets not glaucous. 



t Leaf margin entire. 



8. Eucalyptus whittingehamensis, Nicholson. A hybrid, probably originating in 



Tasmania. See p. 1642. 

 Young branchlets^ usually green, terete. Leaves lanceolate, 3 to 3f in. 

 long, f to f in. wide, usually straight, greyish green, entire in margin. 



' Some,of the descendants of E. whittingehamensis have glaucous branchlets. 



