Eucalyptus 
Petioles 15-37 mm long. Leaf blades dull, 
concolorous, lanceolate to broadly lanceolate, 105- 
175 mm long, 40-90 mm wide, L/B 1.4-3.2. Inflores- 
cence a terminal corymb. Buds pedicellate, pyriform, 
12-30 mm long incl. pedicel, 5-8 mm wide; operculum 
saucer shaped, umbonate. Capsules on pedicels 3-13 
mm long; hypanthium usually smooth, urceolate, 
16-27 mm long, 13-19 mm wide. Seed winged. 
Flowering: Nov - Oct; fruiting: May - Oct. Fig. 50 
Widespread from the Kimberley to Arnhem Land 
with some records from northern Qld. In the DR 
common in a variety of habitats, particularly wood- 
land and open woodland on shallow soils. The 
species described here includes E. darwinensis Carr 
& Carr and E. kakadu Carr & Carr. 
E. grandifolia R.Br. ex Benth. 
Tree to 15 m, deciduous; bark smooth and white 
throughout, rarely with a short stocking of persistent 
flakes. Leaves of reversion shoots scabrous. Adult 
leaves alternate or opposite; petioles 10-26 mm long; 
blades shiny, leathery, broadly lanceolate, broadly 
elliptic or lanceolate, 100-175 mm long, 35-110 mm 
wide, L/B 1.4-2.4. Inflorescence of “clavigera’” type, 
usually on old wood. Buds with long pedicels, 
campanulate, 40-60 mm long incl. pedicel, 9-11 mm 
wide; operculum saucer shaped, rounded or apiculate. 
Capsules on pedicels 17-60 mm long; hypanthium 
often striate, suburceolate or almost cylindrical, 
14-18 mm long, 10-13 mm wide. Seed saucer shaped. 
Flowering and fruiting: July - Oct. Fig. 50 
Infrequent in the DR; more common south of about 
14°S where it extends from the Kimberley to the Gulf 
of Carpentaria. Habitat preference is for run-on areas 
with slightly impeded drainage. 
E. herbertiana Maiden 
Tree or mallee to 8 m; bark smooth and white 
throughout, new bark salmon coloured. Petioles 
10-18 mm long. Leaf blades concolorous, narrowly 
lanceolate or lanceolate, 62-160 mm long, 8-33 mm 
wide, L/B 4-16. Inflorescence of axillary umbels on 
current seasons growth. Peduncles 6-13 mm long. 
Buds sessile or shortly pedicellate, ellipsoid, 6-12 mm 
incl. pedicel, 2.7-4.5 mm wide; operculum cupular, 
about equal in length to hypanthium, acute. Capsules 
on pedicels 0-4 mm long; hypanthium hemispherical 
to obconic, 2.5-5 mm long, 4-6 mm wide; valves 
strongly exsert, 2-2.5 mm long. Flowering: Aug - Dec; 
fruiting: all months. Fig. 50 
On sandstone from the Kimberley to the Qld Gulf. 
In the DR recorded from Litchfield NP. This species 
MYRTACEAE 163 
has become popular in amenity plantings in Darwin 
because of its small size and bright orange new bark. 
E. jacobsiana Blakely 
Tree to 10 m, rarely to 18 m; rhizomatous. Bark 
yellow-brown, fibrous throughout. Petioles 6-12 mm 
long. Leaf blades discolorous, shiny above, narrowly 
lanceolate, 36-120 mm long, 7-21 mm wide, L/B 4.2- 
15. Inflorescence a terminal corymb. Buds pedicellate, 
obconic, 8-13 mm long incl. pedicel, c. 3 mm wide; 
operculum saucer shaped, apiculate. Capsules on 
pedicels 3-6 mm long; hypanthium grey-mottled, 
urceolate, 7-11 mm long, 5-9 mm wide; valves deeply 
sunken. Seeds wingless. Flowering: Dec; fruiting: 
June - Sept. Fig. 50 
An NT endemic; relatively common in Arnhem 
Land. In the DR it is known from laterite-capped 
plateaus just north of Pine Creek and near Tipperary 
Station. 
E. jensenii Maiden 
Tree to 12 m, deciduous; bark black or grey, 
persistent, deeply furrowed. Petioles 4-12 mm long. 
Leaf blades concolorous, often glaucous, lanceolate 
to broadly lanceolate or elliptic, 45-110 mm long, 
10-35 mm wide, L/B 1.7-5.5, obtuse. Inflorescence a 
terminal panicle with solitary umbels in the upper 
axils. Buds sessile or shortly pedicellate, ellipsoid, 
4-8 mm long incl. pedicel, 2.6-4.2 mm wide; 
operculum hemispherical, rounded. Capsules on 
pedicels 0-5 mm long; hypanthium hemispherical or 
ovoid, 2-6 mm long, 2.5-5 mm wide; valves slightly 
exsert. Flowering: Mar - May; fruiting: May - Oct. 
Fig. 50 Ironbark 
Disjunctly distributed from the Kimberley to Groote 
Eylandt; on a variety of habitats from clay plains to 
rocky ridges. In the DR E. jensenii can be seen on the 
crests of the hills south of Adelaide River township 
and near Mt Bundey. It is the only true ironbark in 
the NT. 
E. kombolgiensis Brooker & Dunlop 
Tree to 10 m; bark mostly smooth with a short stock- 
ing of thin flaky bark (not neatly tessellated) on lower 
trunk. Intermediate leaves scabrous hairy, broadly 
lanceolate. Petioles 5-12 mm long. Leaf blades 
concolorous, narrowly lanceolate, 50-180 mm long, 
5-22 mm wide, L/B 4-12.8. Inflorescence “ clavigera” 
type, on last seasons wood. Buds pedicellate, clavate, 
12-16 mm long incl. pedicel, 3-4.5 mm wide; 
operculum saucer shaped, rounded. Capsules on 
pedicels 9-16 mm long; hypanthium suburceolate or 
ovoid, 5.5-9 mm long, 5-7 mm wide; valves sunken. 
Flowering: Oct - Nov; fruiting: Oct - Dec. Fig. 51 
