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 medium weight, rather light yellow, with a marked, long,
straight grain, alternate yellow and white. The pores are very long,
the rings very close. Planes and saws well, with a sheen in places.
=The Leaves= are about 9 inches long, bipinnate with some 10-15 pairs
of pinnae, each having from 10-20 leaflets. The leaflets are broad,
sharply pointed and uneven in shape, the inner portion being much
narrower than the outer, whilst the inner edge is almost straight and
the outer curved to the tip; they overlap and are inclined towards the
tip of the pinna, whose main rib has a small extension between the
top-most pair. The leaves are slightly sensitive and close at night
and very shortly after they are gathered. The main rib of the leaf has
purple blotches on its upper surface and is covered with very short
hairs. The leaf is smooth with a waxy surface and much darker above
than below.
=The Flowers=, which appear in April are in spherical heads of about
thirty together, borne on a 2½ inch stalk. Each flower has a small
5-lobed reddish calyx, 5 small reddish petals and some 18 stamens which
are an inch long, very slender, white, gradually becoming green towards
the anthers. There is a 1½ inch long pistil, also becoming green
towards the tip. The flowers are sweet scented, blooming at night.
=The Fruits= are pods from 3-6 inches long and ¾ inch wide, and vary in
size according to number of seeds and in colour from a very light brown
with a pinkish tinge to an uniform light red-brown colour. They are
flat and the seeds embossed, the edges of the pod being straight and
not indented between the seeds. The whole surface is covered with very
short hairs and is velvety to the touch. The pods open on the tree or
on the ground, splitting up to the stalk. The seeds are small, round,
flat, and green-brown in colour, and are attached to each half of the
pod alternately by a long stalk, part of which is straight and part
tightly curved into an S next the seed. The pods are ripe in November
and remain, a light crop, till April. There is a fine cellular veining
on the surface.
[Illustration]
=AMBLYGONOCARPUS SCHWEINFURTHII= Harms.—_Tsege, Kiriya ta mata, Kolo_.
LEGUMINOSAE.
Public-domain text, read in full here on John Shaqi.
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