20 EUCALYPTUS TREES. 
adherent calyx-tube and seeds without albumen. (See Figs. L., 
a PL, “Vs TK 
The definitions of three myrtaceous plants of different tribes 
is added, so that a fuller view of the characteristics of the order 
may be obtained. 
Melaleuca Wilsoni (Fig. VIII.)—A tall shrub, glabrous or the 
young branches slightly downy. Leaves opposite, sessile, crowded, 
linear or narrow-lanceolar, acute, but little spreading, above 
slightly concave, beneath somewhat convex, 3-3 of an inch long. 
Bracts crowded, acuminate. Flowers few, several or sometimes 
only one from the axis of a leaf, rarely in terminal heads or 
spikes ; lobes of the calyx acute, half as long as the glabrous 
almost oval petals. Stamens pink, to about two-thirds of their 
length united into five bundles, long-exserted ; each bundle with 
9-20 filaments. Anthers fixed at their back, heartshaped-ovate: 
Style elongated, with a minute hemispheric stigma. Fruits 
almost bell-shaped, sessile, with five short teeth, placed at one 
side of the branchlets not around them, with three cells for the 
reception of the seeds; the latter small, quadrangular-conical 
or almost club-shaped, only partly fertile, seated on axillary 
placentas. 
At Lake Hindmarsh, in the Tattiara country and on Spencer’s 
Gulf. This elegant species was dedicated by the author to 
Messrs. Wilson of the Wimmera, under whose aid the plant 
was discovered. 
Thryptomene Mitchelliana (Fig. [X.).—A bush, several feet 
in height, smooth in all parts. Leaves opposite, flat, oval or 
oblong, with an almost wedge-shaped base, +4 inch long, on very 
short stalks. Flowers towards the summit of the branchlets 
axillary, solitary or two or three placed together. Flowerstalks 
usually shorter than the calyx ; bracteoles two, opposite, very 
fugacious. Tube of the calyx bellshaped-oval, in age about 3 
inch long, compressed, slightly ribbed, terminated by five rounded- 
blunt lobes, the whole calyx about } of an inch long. Petals 
orbicular, sessile, white or reddish, shorter than the lobe of the 
calyx. Stamens five, alternate with the petals, opposite to the 
calyx-lobes ; filaments very short. Anthers red, consisting of two 
