10 EUCALYPTUS TREES. 
distant from the edge, with a strong midrib and with concealed 
oildots. Flowers axillary, solitary or two or three together, sessile, 
or on ashort and broad stalk ; separate stalklets none. Bracteoles 
two, oval, pointed, 3-4 inch long, half connate, clasping the flower- 
bud, early deciduous. Calyx (Fig. Il. 1) of a bluish-white hue, 
dotted with oilglands ; its lower portion almost obverse-pyramidal 
or verging into a hemispheric form; its upper portion (forming a 
lid or operculum) crown-shaped, both of almost equal length, warty 
rough, of thick consistence, an additional thin outer lid dropping 
early; the whole usually from 4-3? inch in diameter. Petals 
none. Stamens (Fig. II. 3) extremely numerous, in many rows, 
mostly from 4-2 inch long, pale yellowish, inflected before ex- 
pansion ; filaments capillary ; anthers small, oval, yellow, fixed 
at the middle of the back, terminated by a gland; the two cells 
parallel, opening with a longitudinal slit. Style filiform, shorter 
than the stamens. Stigma convex, undivided, hardly broader than 
the style. Fruit (Figs. I. 4 and 5) often an inch broad, longitu- 
dinally angular, woody, between the depressed somewhat convex 
top and the calyx-tube narrowly channelled, 4—6-celled or rarely 
3-celled; valves or teeth at the summit of the hollows deltashaped- 
triangular. Seeds (Fig. II. 6 and 7) numerous, without append- 
ages; the greater number sterile and either narrow-clubshaped, 
or abbreviated and somewhat rhombeshaped; the lesser number 
fertile, oblique or roundish-oval, black, not shining, $5 of an 
inch long. Albumen none. EHmbryo consisting of two broad 
thin cotyledons, which are folded over the cylindric radicle. 
The geographic area of the Blue Gum-tree extends from the 
most southern districts of New South Wales through the eastern 
and southern counties of Victoria into Tasmania. The incertainty 
of the vernacular appellation will be apparent from the fact, that 
several very different species of Eucalyptus bear the name of 
“Blue Gum-trees” in many districts of New South Wales, 
Queensland and West Australia. The wood of ours is hard, 
heavy, durable, of great bearing power and of comparatively pale 
color. On transverse section it looks as if perforated by numer- 
ous needle-pricklings, indicative of the ducts, which are large and 
sometimes oblique. On longitudinal section the vascular tissue 
