''Milicia regia'' is a species of tropical

tree In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, e.g., including only woody plants with secondary growth, only ...

in the family

Moraceae Moraceae is a family of flowering plants comprising about 48 genera and over 1100 species, and is commonly known as the mulberry or fig family. Most are widespread in tropical and subtropical regions, less so in temperate climates; however, their ...

. It grows in a belt on the west coast of Africa that extends from

the Gambia The Gambia, officially the Republic of The Gambia, is a country in West Africa. Geographically, The Gambia is the List of African countries by area, smallest country in continental Africa; it is surrounded by Senegal on all sides except for ...

Ghana Ghana, officially the Republic of Ghana, is a country in West Africa. It is situated along the Gulf of Guinea and the Atlantic Ocean to the south, and shares borders with Côte d’Ivoire to the west, Burkina Faso to the north, and Togo to t ...

. It is threatened by

habitat loss Habitat destruction (also termed habitat loss or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease ...

and logging.

Description

''Milicia regia'' has a wide, rounded dark green crown. The trunk is tall and straight, with smooth, reddish-brown

bark Bark may refer to: Common meanings * Bark (botany), an outer layer of a woody plant such as a tree or stick * Bark (sound), a vocalization of some animals (which is commonly the dog) Arts and entertainment * ''Bark'' (Jefferson Airplane album), ...

. The

leaves A leaf (: leaves) is a principal appendage of the stem of a vascular plant, usually borne laterally above ground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, ...

are borne on short

petiole Petiole may refer to: *Petiole (botany), the stalk of a leaf, attaching the blade to the stem *Petiole (insect anatomy) In entomology, petiole is the technical term for the narrow waist of some hymenopteran insects, especially ants, bees, and ...

s and are ovate, dark green and up to long. They are arranged alternately along the twig and have 7 to 11 lateral nerves and untoothed margins. Male and female flowers are borne on separate trees. Male trees are taller and more slender than female trees and start flowering first. The

catkin A catkin or ament is a slim, cylindrical flower cluster (a spike), with inconspicuous or no petals, usually wind- pollinated ( anemophilous) but sometimes insect-pollinated (as in '' Salix''). It contains many, usually unisexual flowers, arra ...

s are borne in the axils of the leaves. The male tree has long catkins that can extend to in length, and the flowers in the upper part of the

crown A crown is a traditional form of head adornment, or hat, worn by monarchs as a symbol of their power and dignity. A crown is often, by extension, a symbol of the monarch's government or items endorsed by it. The word itself is used, parti ...

come out earlier than those further down. The female catkins are produced on the upper parts of the crown and are green and up to in length, with protruding styles. The flowers are wind pollinated and by the time the fruits have ripened in five to six weeks, they have turned yellow. They fall from the tree and the many small seeds are dispersed by the birds, mammals and insects that feed on the fruit.

Distribution and habitat

''Milicia regia'' is found (from west to east) in

Senegal Senegal, officially the Republic of Senegal, is the westernmost country in West Africa, situated on the Atlantic Ocean coastline. It borders Mauritania to Mauritania–Senegal border, the north, Mali to Mali–Senegal border, the east, Guinea t ...

Guinea-Bissau Guinea-Bissau, officially the Republic of Guinea-Bissau, is a country in West Africa that covers with an estimated population of 2,026,778. It borders Senegal to Guinea-Bissau–Senegal border, its north and Guinea to Guinea–Guinea-Bissau b ...

Guinea Guinea, officially the Republic of Guinea, is a coastal country in West Africa. It borders the Atlantic Ocean to the west, Guinea-Bissau to the northwest, Senegal to the north, Mali to the northeast, Côte d'Ivoire to the southeast, and Sier ...

Sierra Leone Sierra Leone, officially the Republic of Sierra Leone, is a country on the southwest coast of West Africa. It is bordered to the southeast by Liberia and by Guinea to the north. Sierra Leone's land area is . It has a tropical climate and envi ...

Liberia Liberia, officially the Republic of Liberia, is a country on the West African coast. It is bordered by Sierra Leone to Liberia–Sierra Leone border, its northwest, Guinea to Guinea–Liberia border, its north, Ivory Coast to Ivory Coast–Lib ...

Ivory Coast Ivory Coast, also known as Côte d'Ivoire and officially the Republic of Côte d'Ivoire, is a country on the southern coast of West Africa. Its capital city of Yamoussoukro is located in the centre of the country, while its largest List of ci ...

, and

. It grows in the high forest zone, in

savanna A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) biome and ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach th ...

woodland, and in valleys and riverside habitats, but it needs well-drained soil.

Uses

The timber is strong and durable, with logs being up to a metre (yard) in diameter. It is yellow-brown to brown with a coarse texture and darker veins. It is resistant to termites and fungal attack, and damage by wood-boring insects is limited to the sapwood. ''Milicia regia'' is one of two trees known as "odum" in Ghana, the other being the closely related ''

Milicia excelsa ''Milicia excelsa'' is a tree species from the genus '' Milicia'' of the family '' Moraceae''. Distributed across tropical Central Africa, it is one of two species (the other being '' Milicia regia'') yielding timber commonly known as ọjị, Af ...

''. The timber from both trees is known as "

iroko Iroko (Yoruba language, Yoruba: Ìrókò) is a large hardwood tree from the west coast of tropical Africa that can live up to 500 years. This is the common name for the genus ''Milicia'', in which there are two recognized species, which are close ...

" and is used in construction, joinery, furniture making and the creation of mortars for grinding food. Attempts to grow the tree in plantations have been unsuccessful because the buds are attacked by the psyllid fly ''Phytolyma lata''. The larvae of this insect create

gall Galls (from the Latin , 'oak-apple') or ''cecidia'' (from the Greek , anything gushing out) are a kind of swelling growth on the external tissues of plants. Plant galls are abnormal outgrowths of plant tissues, similar to benign tumors or war ...

s that weaken the young tree, causing dieback and even death, with seedlings being particularly affected. Natural regeneration of the tree is poor and because large numbers of trees are being felled each year, its future for commercial timber production is in doubt.

References

{{Taxonbar, from=Q5459398

regia The Regia ("Royal house") was a two-part structure in Ancient Rome lying along the Via Sacra at the edge of the Roman Forum that originally served as the residence or one of the main headquarters of kings of Rome and later as the office of the ...

Vulnerable plants Flora of Africa Taxonomy articles created by Polbot Taxa named by Auguste Chevalier