Gray Ironbark
Eucalyptus cinerea
Photographed at Eldoret, Kenya. July 2014.
From Wikipedia:
Grey Ironbark is a common eucalyptus tree of eastern New South
Wales, Australia. A dark trunked forest tree with grey furrowed
bark, mostly seen between 20 and 30 metres tall.
The bark is fairly typical of ironbarks, being rough, hard and
furrowed. Also, the bark can be almost corky in some trees.
From a distance it may appear brown, rather than grey. Young
trees have a compact dense crown, but with age the canopy
becomes more open.
White flowers form on panicles between May and January.
Juvenile leaves are opposite on the stem. Adult leaves are
alternate on the stem, a different green above and below the
leaf.[5] Somewhat glossy above. Noticeably veiny, lanceolate in
shape, 15 cm long by 2.3 wide. Gumnuts are 0.9 x 0.7 cm,
hemispherical or reverse conical in shape.