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 Fruit= is a flat pod, about 3 inches long and 2 inches wide,
whitish in colour. It splits by the curling up of the inner layers and
frees one oval, flat, dark-brown seed, the rudiments of 3 or 4 others
being visible attached to the suture. The open pods with large brown
seeds hanging from their edges are a conspicuous feature in masses
on the tree tops, the seeds and pods remaining some time in position
before being blown down.
=Uses.=—The timber is made into planks, mortars, canoes and
cattle-troughs. The resin is burnt in houses as a fumigating incense.
In times of extreme famine, the young leaves are appreciated as a
vegetable, being eaten with the addition of salt and pepper.
[Illustration]
=PARINARIUM CURATELLAEFOLIUM= Planch.—_Rura, Gwanja kusa_. ROSACEAE.
A small and very common tree averaging 15-20 feet high with a girth of
1-2 feet. It has no form or special characteristic of growth, being
similar to the many other species with which it occurs in open savannah
forests. Its only importance lies in its occurrence in large quantities
over considerable areas. It is readily distinguished from other species
by its flowers and fruits, which latter may be seen for several months
in the year.
=The Bark= is very dark, sometimes almost black, with small, prominent,
corky scales up to 1 inch square. The slash is a dull, dark red.
=The Wood= is light brown, with a slight orange tinge. In transverse
section the rings show as slightly darker lines, the pores are small,
oval, with their length radial, single, not numerous, and connected
by continuous waved concentric lines of soft tissue. The rays are
extremely fine and very close together, quite invisible to the naked
eye. In vertical section the pores are open and slightly darker, the
grain close. It is a soft, sound wood, easily worked, planing with a
dull, smooth finish, not picking up much. The weight is 48 lbs. a cubic
foot.
=The Leaves= are about 5 inches long and 2½ inches broad. They are
alternate, pale green and smooth above and greyish beneath.
=The Flowers= are in long, dense or open, terminal panicles, a number
together. They are greenish in colour, the whole panicle covered with
a light pubescence. Each flower consists of a grey-green, 5-pointed
calyx, 5 minute white petals and 10 stamens, some with pink anthers.
They appear about December or January, and are conspicuous by their
numbers on the leafless tree.
=The Fruits= are reddish-brown drupes, about an inch long, the skin
covered with a number of small, grey lenticels. They have a reddish,
sweet, edible flesh and a large, hard stone. They ripen towards the end
of the year and are the readiest means of identification of the species.
=Uses.=—The fruits are eaten fresh.
The young trees are cut for poles for building (gofa).
[Illustration]
=PARINARIUM MACROPHYLLUM= Sabine.—_Gawasa_. “_Ginger-Bread Plum_.”
ROSACEAE.
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