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 Flowers= are in branched spikes, cream-coloured and sweet-scented.
They appear in November and may flower up to July. Each has the
4-pointed calyx, 4 minute petals, 8 stamens and short pistil common in
this genus. There are bright orange glands inside the calyx.
=The Fruits= are 4-winged seeds, about ¾ inch long. They ripen from
green through red to brown, and hang in loose clusters amongst the
leaves. The stalks of the flower spikes elongate considerably with the
seed growth and intermingle, forming a tangle of seed and stalk.
=Uses.=—There are none other than that the gum is chewed by the natives.
[Illustration]
=COMBRETUM LEONENSE= Engl. & Diels.—_Wuyan damo_. COMBRETACEAE.
This species is found distributed fairly evenly over large areas of
both Tree savannah and the drier, more open forests, and is common
in rocky country. It has a tendency to grow longer, straighter boles
than other species of _Combretum_ and is commonly met with 20-30 feet
high, or even more, with girths of 3-4 feet. If surrounded by other
trees, the stem is exceptionally straight and readily distinguished
by its dark colour and the small, square, regular scales. The crown,
with its large, dark, drooping leaves, is dense, and big trees afford
good shade. The branches droop over and the long, slender twigs hang
straight down.
=The Bark=, a ready means of identification, is dark grey, sometimes
almost black, and is covered with small, prominent, square, even-sized
scales from which the tree gets its Hausa name, owing to its
resemblance to the skin of the large lizard. It yields a gum. The slash
is yellow.
=The Wood= is yellow or greenish-yellow. In transverse section the
pores are small, in groups and festoons, the rings indistinct and the
rays so fine as to be invisible. In the planks the pores are long, wavy
and dark, the grain being crooked and fibrous in appearance. It is a
very hard, tough, heavy wood, most unsatisfactory to saw and impossible
to plane. The strength and durability are great. The weight is 64 lbs.
a cubic foot.
=The Leaves= are larger than those of other species and are dark green,
with a softly hairy surface and a soft texture. They are about 7 inches
long and 2½-3 inches wide, with a long, slender tip, a taper at both
ends and a very short stalk. They are pendulous on the long, slender
twigs.
=The Flowers= are in clusters of 1½ inch spikes and are yellow with a
sweet odour of musk. There are 10 yellow stamens round a square calyx
and the pistil is surrounded densely by hairs on the receptacle. The
flowers appear in March.
=The Fruits= are the typical winged seed of the genus and are smaller
than those of most other species, a light brown in colour, less than 1
inch long and very persistent.
=Uses.=—The stems of small trees make excellent posts for use in the
ground, owing to their great durability.
A concoction from the bark is used medicinally as an astringent.
[Illustration]
Public-domain text, read in full here on John Shaqi.
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