 |
| Portulacaria armiana | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Didiereaceae |
| Genus: | Portulacaria |
| Species: | P. armiana |
| Binomial name | |
| Portulacaria armiana van Jaarsv. | |
Portulacaria armiana (previously Ceraria armiana), also known as the whipstick-porkbush, is a succulent plant found on the border between Namibia and South Africa.
It grows as a low shrub. It can be distinguished from its relatives by its large, grey-green waxy leaves, and its extremely tall inflorescence ("whipstick"), which rises unusually high (up to 8 meters).
Within the genus Portulacaria , it is most closely related to its sister-species Portulacaria namaquensis. [1]
Its natural habitat is the lower reaches of the Orange River valley, on the border between Namibia and South Africa. In this extremely arid, winter-rainfall area, it favours mildly acidic sands on high granite outcrops.
It grows in full sun in extremely well-drained soil, and can be propagated by seed or cuttings. [2]
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 east. Although it does not border Zimbabwe, less than 200 metres of the Botswanan right bank of the Zambezi River separates the two countries. Namibia gained independence from South Africa on 21 March 1990, following the Namibian War of Independence. Its capital and largest city is Windhoek. Namibia is a member state of the United Nations (UN), the Southern African Development Community (SADC), the African Union (AU) and the Commonwealth of Nations.
At 824,292 km2 (318,261 sq mi), Namibia is the world's thirty-fourth largest country. After Mongolia, Namibia is the second least densely populated country in the world.
South Africa occupies the southern tip of Africa, its coastline stretching more than 2,850 kilometres from the desert border with Namibia on the Atlantic (western) coast southwards around the tip of Africa and then northeast to the border with Mozambique on the Indian Ocean. The low-lying coastal zone is narrow for much of that distance, soon giving way to a mountainous escarpment that separates the coast from the high inland plateau. In some places, notably the province of KwaZulu-Natal in the east, a greater distance separates the coast from the escarpment. Although much of the country is classified as semi-arid, it has considerable variation in climate as well as topography. The total land area is 1,220,813 km2 (471,359 sq mi). It has the 23rd largest Exclusive Economic Zone of 1,535,538 km2 (592,875 sq mi).
The Orange River is a river in Southern Africa. It is the longest river in South Africa. With a total length of 2,432 km (1,511 mi), the Orange River Basin extends from Lesotho into South Africa and Namibia to the north. It rises in the Drakensberg mountains in Lesotho, flowing westwards through South Africa to the Atlantic Ocean. The river forms part of the international borders between South Africa and Lesotho and between South Africa and Namibia, as well as several provincial borders within South Africa. Except for Upington, it does not pass through any major cities. The Orange River plays an important role in the South African economy by providing water for irrigation and hydroelectric power. The river was named the Orange River in honour of the Dutch ruling family, the House of Orange, by the Dutch explorer Robert Jacob Gordon. Other names include simply the word for river, in Khoekhoegowab orthography written as !Garib, which is rendered in Afrikaans as Gariep River with the intrusion of a velar fricative in place of the alveolar click, Groote River or Senqu River, derived from ǂNū "Black". It is known in isiZulu as isAngqu
The Namib is a coastal desert in Southern Africa. The name Namib is of Khoekhoegowab origin and means "vast place". According to the broadest definition, the Namib stretches for more than 2,000 kilometres (1,200 mi) along the Atlantic coasts of Angola, Namibia, and South Africa, extending southward from the Carunjamba River in Angola, through Namibia and to the Olifants River in Western Cape, South Africa. The Namib's northernmost portion, which extends 450 kilometres (280 mi) from the Angola-Namibia border, is known as Moçâmedes Desert, while its southern portion approaches the neighboring Kalahari Desert. From the Atlantic coast eastward, the Namib gradually ascends in elevation, reaching up to 200 kilometres (120 mi) inland to the foot of the Great Escarpment. Annual precipitation ranges from 2 millimetres (0.079 in) in the most arid regions to 200 millimetres (7.9 in) at the escarpment, making the Namib the only true desert in southern Africa. Having endured arid or semi-arid conditions for roughly 55–80 million years, the Namib may be the oldest desert in the world and contains some of the world's driest regions, with only western South America's Atacama Desert to challenge it for age and aridity benchmarks.
The Namib-Naukluft Park is a national park in western Namibia, situated between the coast of the Atlantic Ocean and the edge of the Great Escarpment. It encompasses part of the Namib Desert, the Naukluft mountain range, and the lagoon at Sandwich Harbour. The best-known area of the park and one of the main visitor attractions in Namibia is Sossusvlei, a clay pan surrounded by dunes, and Sesriem, a small canyon of the Tsauchab. The desert research station of Gobabeb is situated within the park.
Didiereaceae is a family of flowering plants found in continental Africa and Madagascar. It contains 20 species classified in three subfamilies and six genera. Species of the family are succulent plants, growing in sub-arid to arid habitats. Several are known as ornamental plants in specialist succulent collections. The subfamily Didiereoideae is endemic to the southwest of Madagascar, where the species are characteristic elements of the spiny thickets.
Alexander Bay is a town in the extreme north-west of South Africa. It is located on the southern bank of the Orange River mouth. It was named for Sir James Alexander, who was the first person to map the area whilst on a Royal Geographical Society expedition into Namibia in 1836. With diamonds being discovered along the West Coast in 1925, Alexander Bay was established to service the mining industry.
Aloidendron dichotomum, formerly Aloe dichotoma, the quiver tree or kokerboom, is a tall, branching species of succulent plant, indigenous to Southern Africa, specifically in the Northern Cape region of South Africa, and parts of Southern Namibia.
Vachellia erioloba, the camel thorn, giraffe thorn, or Kameeldoring in Afrikaans, still more commonly known as Acacia erioloba, is a tree of southern Africa in the family Fabaceae. Its preferred habitat is the deep dry sandy soils in parts of South Africa, Botswana, the western areas of Zimbabwe and Namibia. It is also native to Angola, south-west Mozambique, Zambia and Eswatini. The tree was first described by Ernst Heinrich Friedrich Meyer and Johann Franz Drège in 1836. The camel thorn is a protected tree in South Africa.
Portulacaria is a genus of succulent plant, classified in its own subfamily Portulacarioideae in the family Didiereaceae. It is indigenous to southern Africa.
Onseepkans is a small settlement on the banks of the Orange River in Northern Cape Province, South Africa. It is a border post with Namibia for traffic between Pofadder in South Africa and Keetmanshoop in Namibia. The name either originated from a combination of three Nama words: ‘tconsiep’, ‘nias’, and ‘tcaans’ (thorntrees), or a derivative of a nama word that means 'watering place for cattle'.
Aloidendron pillansii, formerly Aloe pillansii, the giant quiver tree or bastard quiver tree, is a large, branching species of succulent plant indigenous to southern Africa. It is regarded as critically endangered.
Angolan–Namibian relations relate to the relations between the governments of the Republic of Angola and the Republic of Namibia.
The ǀAi-ǀAis/Richtersveld Transfrontier Park is a peace park straddling the border between South Africa and Namibia. It was formed in 2003 by combining the Namibian ǀAi-ǀAis Hot Springs Game Park and the South African Richtersveld National Park. Most of the South African part of the park forms part of the buffer zone of the Richtersveld Cultural and Botanical Landscape World Heritage Site, which measures 5,920 square kilometres (2,290 sq mi). The Fish River Canyon is located in the park, the largest canyon in Africa. A memorandum of understanding was signed on 17 August 2003 by the presidents of South Africa and Namibia, which formalized the establishment of the park. |Ai-|Ais means ‘burning water’, after the hot springs of the same name.
Botswana–Namibia relations refers to the current and historical relationship between Botswana and Namibia. As of 2009, relations were considered friendly, with the two neighboring countries cooperating on economic development. Botswana gained independence from Britain in September 1966. Namibia gained independence from South Africa in 1990 following the Namibian War of Independence, and the two countries soon after established formal diplomatic relations. Botswana has a high commission in Windhoek. Namibia has a high commission in Gaborone.
Portulacaria afra is a small-leaved succulent plant found in South Africa. These succulents commonly have a reddish stem and leaves that are green, but also a variegated cultivar is often seen in cultivation. They are simple to care for and make easy houseplants for a sunny location. In frost-free regions they may be used in outdoor landscaping.
Ceraria namaquensis, with the common names Namaqua porkbush and Namaqua portulacaria, is a species of succulent shrub, native to the border between South Africa and Namibia.
Portulacaria pygmaea, also known as the pygmy porkbush, is a small-leaved dwarf succulent plant found on the border between Namibia and South Africa.
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