The useful trees of northern NigeriaLely, Hugh Vandervaes
Science
The useful trees of northern Nigeria
Lely, Hugh Vandervaes
Plants, Useful -- Nigeria, Northern; Trees -- Nigeria, Northern
=The Leaves= are large and rounded with a tongued tip. They average 7
inches long and 3 inches wide, but reach as much as 10 inches long and
5 inches wide. The upper surface is a dark, shining green with pale
venation; the under surface pale green with the venation raised. There
is a short, red leaf-stalk.
=The Flowers= are in balls about 2 inches in diameter and appear in
February. They fade very quickly. The flower-balls are composed of
some hundreds of small flowers which seem white, as each is a yellow,
tubular, 5-lobed corolla with a shiny white pistil with an acorn-shaped
stigma which is very long. There are 5 small stamens attached to
the inside of the corolla, which do not appear. The flowers are
sweet-scented.
=The Fruits= vary somewhat in size and shape but are roughly round or
oval, 2-3 inches in diameter and dark red-brown with the surface pitted
with the pentagonal scars of the flowers. There is a crimson flesh
surrounding a mass of small seeds round a pith centre. They are edible
and have a not unpleasant, sweet, acid flavour. They ripen towards the
end of the year but can be found for many months on the tree and fall
to rot on the ground.
=Uses.=—A medicine for stomach pains is made from the fruits.
[Illustration]
=SCLEROCARYA BIRROEA= Hochst.—_Danya_. ANACARDIACEAE.
This very common tree was, until 1922, considered a species of
_Spondias_, from its resemblance to _S. lutea_, a species occurring
commonly further south. It is of medium size, up to 40 feet in height
with girths of 6-8 feet. It grows on almost any soil and flourishes
in loose sand or dry barren situations where it can be found almost
as pure forest. The short heavy bole gives a large volume of timber,
but the bole length rarely exceeds 12 feet from which point the much
bent branches form a large, round, open crown giving little shade. The
pinnate foliage, red flower-spikes or yellow plums distinguish it.
Owing to its use for native mortars enormous waste takes place, one
mortar being carved from trees which will provide three or four, the
rest being allowed to rot or burn. Quite large limbs can be pulled off
by hand as they snap very readily. It is not very fast growing and
seedlings branch at ground level. Seedlings, however, are very hardy,
sending a thickened tap-root several feet into the ground the first
year.
=The Bark= is light grey, sometimes smooth and silvery, and large
scales, which turn up at their edges and give the stem a ragged
appearance, leave the stem smooth again after falling. The slash is
salmon pink to red and spongy and fibrous in composition.
Public-domain text, read in full here on John Shaqi.
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