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 Fruits= are the most conspicuous feature of the species and the
most ready means of identification for several months in the year, as
they are very persistent, in whole or in part. Each is a long, flat,
ribbon-like pod, from 6-15 inches long and over 2 inches broad with as
many as 15 seeds, embossed. A rich brown in colour, the pod splits into
sections between each seed, the outer cover falling away and releasing
the seed which has a wing the shape of each section. The seed itself
is a small, flat, brown oval, and the papery wing is veined. The seeds
fall one by one, leaving the skeleton rim of the pod itself persistent
for some time. The pods are a prominent and disfiguring feature of the
tree, in the dry season.
=Uses.=—The leaves are appreciated as cattle fodder. An infusion of the
bark is drunk as a tonic. The bark of stem and roots gives a fibre used
as rope.
[Illustration]
=ERIODENDRON ORIENTALE= Steud.—_Rimi_. _The White-flowered
Silk-Cotton_. MALVACEAE.
This well-known tree is the tallest in the northern provinces and a
height of 100 feet may be reached, with girths of 12 and 15 feet. Those
who are familiar with the giant examples of the south will readily
distinguish the difference in form between them and the type found in
the north. In place of the clean bole up to 100 feet long with great
horizontal limbs, the crown descends to within 10-20 feet of the ground
and is, as a rule, very regular and shaped like a sugar-loaf, with a
pointed top. The other type is seen but is not typical of the region.
The branches, too, ascend at an acute angle and in the case of trees
which have been lopped, a very common occurrence in the north, the
new branches run up parallel with the main stem. Here and there occur
branches which grow at right-angles to the main stem, so that one tree
will show both types. The tree, as a rule, bears large, conical thorns,
but there is a variety called “Rimi Masar” which has no thorns at all.
The young tree shows a whorled arrangement of the branches. It is
one of the quickest-growing trees and can be grown from poles, stuck
upright in the ground.
=The Bark= is pale grey and smooth. In young specimens it is a bright
green, with or without a mass of stout, conical thorns with round bases
and sharp, black points. The slash is crimson and white in patches, the
white darkening to brown.
=The Wood= is white with small, yellowish streaks, and is soft and
fibrous when green, and brittle and inclined to be crumbly when dry. It
rapidly rots on exposure to weather but will wear quite well when made
up into any article, such as a stool. It is short in the fibre and has
been rejected as a source of pulp for that reason.
=The Leaves= are truly digitate with 7-9 lobes, each 3-4 inches long
and narrow and pointed. They are dark green and smooth and slightly
paler beneath, with a long stalk.
Public-domain text, read in full here on John Shaqi.
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