AS AIDS IN THE DETERMINATION OF SPECIES. 39 



IX. — Form Belonging to Tasmania, Victoria, and New South Wales. 



23. E. globulus, hahiWardieve; blue gum. 

 Tree.— Very tall. 



Leaves. — Thick, elongated, equally green on both sides. 



Size of Section. — A little over 1 line broad and 1 line thick, or slightly broader 



than thick. 

 Outline of Section. — Oval, slightly flattened on upper surface. 

 Epidermis. — Thickness, ^^ in. 



Breadth, 4 — 4 in. 

 Cortical Cavities. — i in., oval to round, numbering usually 7 or 8. 

 Crystals. — Very numerous. 



Hard Bast. — Strongly developed, continuous, and usually dense. 

 Wood-curve (see Figs. 32 and 33a).— Body thickened, particularly at the centre, 

 and gently incurved horns, each about one-third length of body, 

 and directed towards it at the tip. 

 Vessels. — Largest, ^-^ in. 



Average, about half that. 



Comparatively large and numerous, radially arranged, and distributed 

 mainly in upper half. A number of large vessels usually scattered 

 about lower portions of wood. 

 Characteristic features : 



Section. — Average size, slightly broader than thick. 

 Cortical Cavities. — Large, and numbering about 7 or 8. 

 Crystals. — Very numerous. 

 Hard Bast. — Well-developed and dense. 



Wood-curve. — With thickened body, and horns curving gently inward. 

 Vessels. — Large, numerous, and distributed mostly in upper half, but 

 sparingly along lower margin of wood. 



Remark. — In one petiole examined, all the sections showed an isolated bundle at 

 one side of the ordinary curve. 



This species, however, shows as little tendency to broken and isolated wood- 

 curve as any other examined. 



X. — Forms Belonging to South Australia, Tasmania, Victoria, and 



New South Wales. 



24. E. obliqua,lj'}lentiev; messmate. 



Tree.— Lofty. 



Leaves. — Very inequilateral at base, equally green on both sides. 



