Brachystegia Utilis
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''Brachystegia'' is a genus of tree of the subfamily
Detarioideae The subfamily Detarioideae is one of the subdivisions of the plant family Fabaceae (legumes). This subfamily includes many tropical trees, some of which are used for timber or have ecological importance. The subfamily consists of 84 genera, mos ...
that is native to tropical Africa. Trees of the genus are commonly known as miombo, and are dominant in the
miombo woodland Miombo woodland is a tropical and subtropical grasslands, savannas, and shrublands biome (in the World Wide Fund for Nature scheme) located in central and southern tropical Africa. It includes three woodland savanna ecoregions (listed below) charac ...
s of central and southern
tropical Africa The Afrotropical realm is one of the Earth's eight biogeographic realms. It includes Sub-Saharan Africa, the southern Arabian Peninsula, the island of Madagascar, and the islands of the western Indian Ocean. It was formerly known as the Ethiopi ...
. The Zambezian region is the centre of diversity for the genus.Emmanuel N. Chidumayo and Davison J. Gumbo, eds. (2010). ''The dry forests and woodlands of Africa: managing for products and services''. Earthscan, 2010.


Description

Hybridisation between the species occurs and taxa show considerable variation in leaflet size, shape and number, making identification difficult. New leaves show a great range of red colours when immature, later turning to various shades of green.


Range and habitat

''Brachystegia'' species range from coastal West Africa through Nigeria and Central Africa to the Northern Province of South Africa. Habitats include seasonally dry forest, woodland, wooded grassland and bushland, and lowland tropical rain forest, often along rivers, the margins of wetlands, and on upland plateaus. Some species form monodominant stands. 18 species are native to Zambezian woodland. Six grow in
Guineo–Congolian forest The Guineo-Congolian region is a biogeography, biogeographical region in Africa straddling the Equator and stretching from the Atlantic Ocean through the Congo Basin to the Congo-Nile Divide (Rwanda-Burundi), Congo / Nile divide in Rwanda and Burun ...
, with six in west-central Africa and 1 in West Africa. One species grows in the Zanzibar–Inhambane coastal forests of eastern Mozambique.


Species

32 species are currently accepted: * '' Brachystegia allenii'' – Tanzania, DR Congo, Malawi, Zambia, Mozambique, Zimbabwe * ''
Brachystegia angustistipulata ''Brachystegia angustistipulata'' is a species of plant in the family Fabaceae. It is found in Democratic Republic of the Congo and Tanzania Tanzania, officially the United Republic of Tanzania, is a country in East Africa within the African ...
'' – Tanzania and southern DR Congo * '' Brachystegia appendiculata'' – Malawi * '' Brachystegia astlei'' – Zambia * '' Brachystegia bakeriana'' – southeastern Angola and Zambia * '' Brachystegia bequaertii'' – southern DR Congo * '' Brachystegia boehmii'' – Tanzania and DR Congo to Angola, Botswana, and Mozambique * '' Brachystegia bournei'' – Zambia * '' Brachystegia bussei'' – DR Congo and Tanzania to Zimbabwe and Mozambique * '' Brachystegia cynometroides'' – Cameroon and southwestern Central African Republic * '' Brachystegia eurycoma'' Nigeria, Cameroon, and Gabon * '' Brachystegia floribunda'' – Tanzania and DR Congo to Angola, Zambia, and Mozambique * '' Brachystegia glaberrima'' – Tanzania, DR Congo, and Zambia * '' Brachystegia gossweileri'' – DR Congo, Angola, and Zambia * '' Brachystegia kennedyi'' – southern Nigeria and Cameroon * '' Brachystegia laurentii'' – Cameroon, Gabon, and DR Congo * '' Brachystegia leonensis'' – Sierra Leone, Liberia, and Côte d'Ivoire * '' Brachystegia letestui'' – southern DR Congo * '' Brachystegia longifolia'' – Tanzania and DR Congo to Angola, Zambia, and Mozambique * '' Brachystegia lujae'' – DR Congo * '' Brachystegia manga'' – Tanzania and DR Congo to Angola, Zimbabwe, and Mozambique * '' Brachystegia michelmorei'' – Zambia * '' Brachystegia mildbraedii'' – Cameroon and Gabon * '' Brachystegia nigerica'' – Nigeria * '' Brachystegia oblonga'' – northeastern Mozambique * '' Brachystegia puberula'' – Tanzania, DR Congo, Zambia, and Angola * '' Brachystegia russelliae'' southern DR Congo, Angola, and Zambia * '' Brachystegia spiciformis'' – southeastern Kenya and DR Congo to Angola and Northern Province of South Africa * '' Brachystegia stipulata'' – Tanzania and DR Congo to Zambia and Mozambique * '' Brachystegia tamarindoides'' – Tanzania and DR Congo to Angola, Zimbabwe, and Mozambique * '' Brachystegia taxifolia'' Tanzania, DR Congo, Malawi, and Zambia * '' Brachystegia utilis'' – Tanzania and DR Congo to Angola, Zimbabwe, and Mozambique * '' Brachystegia × weltwitschii'' – Angola


References


External links

* * Trees of Africa Miombo Fabaceae genera Flora of the Afrotropical realm Taxa named by George Bentham {{Detarioideae-stub