EUCALYPTUS TREES. 19 
It remains still to be pointed out in a few words by what 
collective notes or marks any plants of the myrtaceous order are 
recognised. They 
are all pervaded 
by a volatile 
odorous oil, have 
undivided leaves 
teethless at the 
margin; no con- 
Spicuous stipules ; 
the tube of the 
calyx adnate to 
the ovary; usually 
four or five lobes 
of the calyx and 
frequently as 
many petals, 
which overlap 
each other’s mar- 
gin before expan- 
sion; stamens 
(with rare excep- 
tions) indefinitely 
numerous, in- 
serted around 
the summit of 
the calyx-tube ; 
always two par- 
titioned anthers ; 
asimple style with 
an usually un- 
divided stigma ; - 
axillary placen- 
tas; mostly nu- 
merous ovules ; 
the fruit  sur- 
rounded by the 
Fie. VIII. 
Fie, VIII.—(Melaleuca Wilsoni)—1, unexpanded 
flower with bract; 2,a petal; 3,a bundle of stamens ; 
4, front- and back-view of anthers ; 5, pollen-grains ; 6 
style with stigma; 7, transverse section of fruit; 8, 
longitudinal section of fruit; all except 5 magnified 
several times ; 5, enlarged 250 times diametrically ; the 
main-figure of natural dimensions. 
’ 
B2 
