Balanites angolensis
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''Balanites angolensis'', or Angolan green-thorn, is a species of tree from southern Africa, it is a member of the
caltrop A caltrop (also known as caltrap, galtrop, cheval trap, galthrap, galtrap, calthrop, jackrock or crow's foot'' Battle of Alesia'' (Caesar's conquest of Gaul in 52 BC), Battlefield Detectives program, (2006), rebroadcast: 2008-09-08 on History Ch ...
family,
Zygophyllaceae Zygophyllaceae is a family of flowering plants that contains the bean-caper and caltrop. The family includes around 285 species in 22 genera. Plants in the family Zygophyllaceae may be trees, shrubs, or herbs. They are often found in dry habit ...
.


Description

''Balanites angolensis'' is a small semi-
deciduous In the fields of horticulture and Botany, the term ''deciduous'' () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, aft ...
tree or shrub which grows to up to 8m in height. It has rough, corrugated bark which is green or greenish yellow on young shoots which are covered in dense hairs with yellow or green thorns which are up to 9 cm long. The flowers are greenish-yellow to whitish and are borne in small axillary clusters, each flower consisting of 5 petals and 5 sepals. The fruit is 30mm long, ovoid in shape and is orange when ripe. The leaves are alternate, consisting of one pair of leaflets, 12-17mm in length, leathery, yellowish green and downy. The leaves are ovoid with a pointed tip and tapering base and a short stalk.


Distribution

''Balanites angolensis'' is found in
Angola , national_anthem = " Angola Avante"() , image_map = , map_caption = , capital = Luanda , religion = , religion_year = 2020 , religion_ref = , coordina ...
,
Botswana Botswana (, ), officially the Republic of Botswana ( tn, Lefatshe la Botswana, label=Setswana, ), is a landlocked country in Southern Africa. Botswana is topographically flat, with approximately 70 percent of its territory being the Kalahar ...
and north eastern
Namibia Namibia (, ), officially the Republic of Namibia, is a country in Southern Africa. Its western border is the Atlantic Ocean. It shares land borders with Zambia and Angola to the north, Botswana to the east and South Africa to the south and ea ...
.


Habitat

''Balanites angolensis'' occurs along seasonal watercourses and in savannah, on dry hills and in coastal forest. In dry scrub forest and
mopane ''Colophospermum mopane'', commonly called mopane, mopani, balsam tree, butterfly tree, or turpentine tree, is a tree in the legume family (Fabaceae), that grows in hot, dry, low-lying areas, in elevation, in the far northern parts of southern A ...
woodland ''Balanites angolensis'' is part of the understorey community.


Phenology

In Namibia ''Balanites angolensis'' flowers in October and November, fruit is seen from November but peaks in March and April.


Uses

The fruit is edible, the branches are used by the Himba for fencing and the roots are used by the Himba to treat breast complaints in nursing mothers by inhaling the smoke of the burning roots and by making an ointment out of the ashes and smearing this on the breasts. Extracts from the tree are also used to treat
genitourinary system The genitourinary system, or urogenital system, are the organs of the reproductive system and the urinary system. These are grouped together because of their proximity to each other, their common embryological origin and the use of common pathwa ...
disorders.


Subspecies

There are two recognised subspecies: *''Balanites angolensis angolensis'' (Welw.) Mildbr. & Schltr. from Angola and Botswana. *''Balanites angolensis welwitschii'' (Tiegh.) Exell & Mendonça from north eastern Namibia.


References

{{Taxonbar, from=Q12249811
angolensis This list of Latin and Greek words commonly used in systematic names is intended to help those unfamiliar with classical languages to understand and remember the scientific names of organisms. The binomial nomenclature used for animals and plants i ...
Trees of Africa Trees of Angola Trees of Botswana Flora of Namibia Edible plants Fruits originating in Africa Plants used in traditional African medicine