Category: Science - Biology

The useful trees of northern Nigeria

The text and plates of this volume have been prepared with the primary object of identification of the trees of the savannah forests of Northern Nigeria. The volume is, in no sense, a Flora, and no attempt has been made to include all the species found in the region under surv...

Chapters

1. Part 1

The text and plates of this volume have been prepared with the primary object of identification of the trees of the savannah forests of Northern Nigeria. The volume is, in no se...

2. Part 2

=The Leaves= are bipinnate, 4 inches long with 6-7 pairs of pinnae bearing some 10-15 pairs of dusty, grey-green leaflets, covered with tiny hairs. The foliage in the mass appea...

3. Part 3

=The Flowers= are solitary and pendulous on 9-10 inch stalks, and appear in May before the leaves. They are some 6-8 inches in diameter with five leathery sepals covered densely...

4. Part 4

=The Fruits= are small, rough, cone-like balls of irregularly serrated-edged seeds, packed horizontally. They are green in the seed and brown in the wing portion. They ripen abo...

5. Part 5

=Uses.=—Locally the pulp is eaten raw or pounded with milk. The kernel is eaten young. The root-buds are roasted and are a delicacy. The leaves are used for mats, bags, baskets,...

6. Part 6

=The Fruit= is a plum, single-stoned and fleshy. If cut through before ripe, the seed can be seen growing in the top under the stigma and it expands downwards from this point, o...

7. Part 7

=The Flowers= appear in February and are on stout spikes of weird shape and appearance, which grow well over a foot long and are about one inch thick. The flower spike shows flo...

8. Part 8

A very well known species of fig tree distinguished by its long narrow leaves and long clusters of small figs. It grows to great sizes, over 40 feet high and with girths of 15 f...

9. Part 9

=The Flowers= appear from October to November and are in large, loose panicles, some 12 inches long. Each is about ⅜ inch in diameter with a small cup-shaped calyx, 6 yellowish...

10. Part 10

=The Bark= is light grey with even-sized scales 1-2 inches long, 1 inch wide and ¼ inch thick. That of the smaller branches is softly corky. The scales are not prominent, nor is...

11. Part 11

A small, erect tree up to some 25 feet in height with 1-2 feet girth, locally very plentiful but otherwise infrequent, _e.g._, in the Anka district of Sokoto it occurs in vast n...

12. Part 12

=The Wood= is a red-brown colour, flecked with black and dark brown of a most distinctive pattern, rather open grained, scented, hard and weighs 50 lbs. a cubic foot. It carpent...

13. Part 13

=The Leaves= are pinnate with 2-3 pairs of leaflets and a terminal one. The whole is about a foot long and the leaflets 3-4 inches long. They darken and toughen with age and are...

14. Part 14

=The Fruits= are like figs at first sight, but very different in structure. Borne in long clusters on the leafless twigs, or amongst the leaves, they ripen in March or April and...

15. Part 15

No.| Name of Tree. |Jul|Aug|Sep|Oct|Nov|Dec||Jan|Feb|Mar|Apr|May|Jun ---+----------------+---+---+---+---+---+---++---+---+---+---+---+--- 1|Acacia albida | | | |———|———|———|| |...

16. Part 16

_Leguminosae_.—Erythrina senegalensis, Ormocarpum bibracteatum, Pterocarpus erinaceus, Lonchocarpus laxiflorus, L. griffonianus, Ostryoderris Chevalieri, Andira inermis, Afrormo...