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 Wood= is a deep red-brown, generally with a pronounced purple
tinge which distinguishes it from _K. grandifolia_, the typical
mahogany hue being absent. In transverse section the rings are
indistinct colour variations; the pores are small, open, single and
scattered about between the long wavy rays which are close together
and visible to the naked eye. In vertical section the pores are open
and dark coloured, the grain showing as waved bands of varying depth
of colour speckled with the pores. The wood is very hard, sometimes
badly cross-grained and tough, but at others sound and fairly straight,
enabling it to be sawn and planed fairly easily. It is very apt to pick
up, but the finished surface takes a good polish. The pore contents
glisten. The sapwood is grey with a purplish tinge. The weight is up to
60 lbs. a cubic foot.
=The Leaves= are pinnate with 4-6 pairs of leaflets. The leaves of
young trees will bear as many as 10 leaflets. The leaf is bright and
shiny when young but darkens and dulls and the greyish under surface is
typical.
=The Flowers= are in lax panicles amongst the end leaves and are found
from December to April, earlier in some parts. The panicles are 6-8
inches long and the small flowers are white with 4 sepals and petals
and 8 stamens whose filaments are united to form a crown round the
knobbed pistil. The tree often flowers out of season.
=The Fruits= are capsules, grey, and erect and conspicuous on the top
of the tree. They are from 2-2½ inches in diameter and split into 4
sections in each of which the flat, winged, mahogany-brown seeds are
tightly packed one above the other. They ripen from March onwards of
the next year, the seeds falling from the split capsule on the tree.
=Uses.=—The wood for furniture, canoes and mortars.
The bark as a bitter tonic after boiling with water, and powdered as a
cure of sore backs of horses.
The leaves are gathered for camel and cattle fodder.
The seeds, dried, fried, beaten up and boiled to extract the oil, are
used for anointing the body, by pagans.
[Illustration]
=KIGELIA AETHIOPICA= Decne. _var._ =BORNUENSIS= Sprague.—_Rawuya,
Rahaina, Nonon Giwa_. “_Sausage Tree_.” BIGNONIACEAE.
A large tree up to 50 feet in height with a girth of 6-7 feet. It
occurs in the north mostly in “kurmis” up to 11° N. or more. It is not
a savannah tree but has penetrated a great distance into them by way
of the streams. It is low-branching or forking, and has large limbs
forming a high or wide crown of great spread and dense foliage. Either
in flower or fruit it is unmistakable.
=The Bark= is grey or light brown with small, soft, corky scales,
rather scattered and leaving lighter brown patches.
Public-domain text, read in full here on John Shaqi.
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