Balanites angolensis

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

Balanites angolensis
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Zygophyllales
Family: Zygophyllaceae
Genus: Balanites
Species:
B. angolensis
Binomial name
Balanites angolensis
(Welw.) Mildbr. & Schltr.[1]
Synonyms[1]
  • Balanites aegyptiaca var. angolensis Welw.
  • Agiella angolensis (Welw.) Tiegh.

Balanites angolensis, or Angolan green-thorn, is a species of tree from southern Africa, it is a member of the caltrop family, Zygophyllaceae.

Description[edit]

Balanites angolensis is a small semi-deciduous 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.[2]

Distribution[edit]

Balanites angolensis is found in Angola, Botswana and north eastern Namibia.[3]

Habitat[edit]

Balanites angolensis occurs along seasonal watercourses[2] and in savannah, on dry hills and in coastal forest.[3] In dry scrub forest and mopane woodland Balanites angolensis is part of the understorey community.[4]

Phenology[edit]

In Namibia Balanites angolensis flowers in October and November, fruit is seen from November but peaks in March and April.[3]

Uses[edit]

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 disorders.[3]

Subspecies[edit]

There are two recognised subspecies:[1]

  • Balanites angolensis angolensis (Welw.) Mildbr. & Schltr. from Angola and Botswana.
  • Balanites angolensis welwitschii (Tiegh.) Exell & Mendonça from north eastern Namibia.

References[edit]

  1. ^ a b c "Balanites angolensis (Welw.) Mildbr. & Schltr". The Plant List. Retrieved 17 December 2016.
  2. ^ a b "Balanites angolensis, Omutungambara". Tree Atlas of Namibia. Retrieved 18 December 2016.
  3. ^ a b c d "Balanites angolensis". Plant Resources of Tropical Africa. Archived from the original on 20 December 2016. Retrieved 18 December 2016.
  4. ^ F White (1983). The vegetation of Africa: A descriptive memoir to accompany the Unesco/AETFAT/UNSO vegetation map of Africa. UNESCO. pp. 91& 95. ISBN 92-3-101955-4.