Acacia for Africa! There are actually 51 recognized species, subspecies (ssp) and varieties (var) of the genus Acacia, that occur within the borders of South Africa. In Rwanda it was probably introduced between 1903 and 1918, with the earliest formal record dating back to … is the fifth most widespread invasive plant species in South Africa (Henderson, 2001). occupations. reficiens,
polygonoides, Capparis decidua, Crotalaria burhia, Leptadenia
luederitzii, A. mellifera, A. tortilis, Boscia albitrunca, Dichrostachys
The decision that Australia could annex the title Acacia … This decision was upheld at the 2011 Congress. Baobab All species of baobab trees are … B. Simpson, G. F. Smith, M. Sousa S., J. Timberlake, J. G. van der Maesen, A. E. Van Wyk, P. Vorster, C. K. Willis, J. J. Wieringa and M. F. Wojciechowski, 2005. Under the original typification, the name Acacia would stay with the group of species currently recognized as the genus Vachellia. Additional Info. In the lower sections occur Acacia tortilis subspp. Other Acacia spp. An evergreen tree growing 5-10m high, black wattle has dark olive-green finely hairy leaves. The Australians, who have about 1,000 species of acacia trees that are indigenous to their continent, approached the botanical naming committee with a crafty appeal that won them the right to the genus name Acacia. Cultivation: Very showy wattle. and tortilis and Ziziphus spina-christi. The most common sources of this product is the species Acacia senegal. It can grow up to 59 feet or 18 meters tall and live up to 200 years. tortilis subsp. It invades roadsides, watercourses and gaps in plantations. A number of Australian Acacia species have become pernicious invasive weeds in South Africa. Karroo-Namib Region (White) 1983), mapping units 51, 52, 53) represents the drier
(Mimosaceae), a new and geographically restricted species from south-east Queensland, A synopsis of the classification and phylogeny of, WATTLE Acacias of Australia Lucid Web Player (multi-access key for identifying Australian Acacias), https://en.wikipedia.org/w/index.php?title=List_of_Acacia_species&oldid=991237227, Short description is different from Wikidata, Articles with unsourced statements from December 2013, Creative Commons Attribution-ShareAlike License, This page was last edited on 29 November 2020, at 00:58. scarcity over much of the terrain, where they are largely restricted to drainage lines. long, 8-20 km wide Ariva Valley, an extension of the Jordanian-Dead Sea Rift, drains into
minor and Ziziphus mucronata. Acacia spp. A complete guide to declared weeds and invaders in South Africa.Plant Protection Research Institute Handbook No. Kruger National Park has over 500 species of bird, 150 species of mammals (including some 12,000 elephants), 100 reptiles, 23,000 plant species and a variety of amphibians. In a previous study, the fungal diversity of native trees and plant species in the Northern Cape Province of South Africa was studied. (Boudy, 1950). The genus was previously typified with the African species Acacia scorpioides (L.) W.F.Wright, a synonym of Acacia nilotica (L.) Delile. While the subg. Indeed, the nomadic pastoralists would
The gravel plains of the Thar-Sind
Acacia pycnantha Benth. Gum arabic has historically been an important part of the Sudanese economy. 12. Several acacia species are important economically. One recognized hybrid is also included. In the Windhoek Mountains (White
My trip with Acacia Africa doing the 29- day East African explorer was absolutely incredible. [1], Which of these segregate genera is to retain the name Acacia has been controversial. from Morocco (Ross 1979). These trees can grow up to 12 meters and is recognizable by its rounded crown, yellow flowers, finely textured leaves and twin thorns. The name Acacia is derived from the Greek word 'akis', meaning a point or a spike, referring to the thorns in many Acacia species. Therefore, the following list of Acacia speciescannot be maintained as a single entity, and must either be split up, or broadened to include species previously not in the genus. Namibia and the Pretoria area in South Africa. Certainly where they form large enough stands they appear to be appreciated. [6] For species that have been transferred to other genera, see Acaciella, Mariosousa, Senegalia, and Vachellia. Relics of this former vegetation occur in the Bou Hedma National
The showy yellow mimosa cut flowers, Acacia dealbata and Acacia baileyana, hail from southeastern Australia. Acacia species grow naturally in the subtropical and tropical parts of the world, mainly in Africa, South America, Polynesia and Australia. degraded by over-grazing and excessive cutting of fuelwood (Bhandari, 1990). The semi-desert vegetation of the
It is also a source of fuel,
While widespread invasions of Australian acacia species (wattles) have been fairly well documented, very little is known about species that have no substantial commercial value or those that are not well-established invaders yet. include big, tuft-forming bushes such as Acacia jaquemontii, Calligonum
This subgenus consists of three clades. abundance and range in South Africa were highly correlated. raddiana to the present-day
Published on Feb 21, 2019 Some background regarding the Alien Invasive Plant, Acacia cyclops, that was purposefully introduced from Australia to stabilise shifting dunes and provide fuel wood. The most up to date, accurate user guide to Alien Invasive Plant Species in South Africa. Australian acacias or wattles (1012 recognized species in the genus Acacia, previously grouped in Acacia subgenus Phyllodineae) have been moved extensively around the world by humans over the past 250 years. Acacia trees are without a doubt the most iconic trees in Africa (besides baobabs, a close runner-up). Acacia cyclops . 3.4 Acacia species in Southern Africa The semi-desert vegetation of the Karroo-Namib Region (White) 1983), mapping units 51, 52, 53) represents the drier formations of southern Africa, extending southwards to beyond the Orange River with such scattered small trees and shrubs as Acacia erioloba , A. mellifera subsp. canopy; this is discussed more fully in section 2.3.6. Black wattle is grown in plantations in South Africa and South America. Acacia species grow naturally in the subtropical and tropical parts of the world, mainly in Africa, South America, Polynesia and Australia. a spiny shrub and grass pseudo-steppe and includes among the Saharo-Sindian trees, Acacia
… Among the species confined to the
northern part of the Region are the endemic Brandberg acacia, Acacia montis-usti, A.
Acacia ataxacantha (=Senegalia ataxacantha) is a hardy, deciduous Acacia that can grow as a scrambling shrub or medium sized tree with many hooked prickles. Why is it a problem? (Photo: Jacoline Mans) The genus Acaciacontains a large number of species (approximately 1 500), making it the largest genus within the pea family (Fabaceae) and is widespread, occurring in Australia, Asia, Africa and the Americas. by Eugene Moll, Biodiversity and Conservation Biology Department, University of the Western Cape and Chairman of the Council of the Botanical Society of South Africa Withoutmuch, if any official, consultation with all African, [5], In its new circumscription, the genus Acacia (now limited to the Australian species) has seven subgeneraâAlatae (an artificial section[citation needed]), Botrycephalae, Juliflorae, Lycopodiifoliae, Plurinerves, Phyllodinae, and Pulchellae (see below). These results are presented in chapter 2. Seed was collected from 28 Australian species of Distribution: New South Wales, Victoria and South Australia.This species is Australia's floral emblem. abyssinica, Aca; extending also into Asia … robynsiana, Adenolobus pechuelii, Commiphora spp., Euphorbia
and Ziziphus mucronata. rainnfed agroforestry and irrigation schemes where the tree is an important source of
It was described from New Zealand, but is an Australian species. indica, which is widely planted for shelter belts and in
Broad-leaved species become increasingly more
The… Xhosa names for invasive plants The trees are often mutilated for browse
supports Acacia ehrenbergiana, Cadaba rotundifolia, Salvadora persica
would, therefore, appear to be limited. Australian acacias or wattles (1012 recognized species in the genus Acacia, previously grouped in Acacia subgenus Phyllodineae) have been moved extensively around the world by humans over the past 250 years. They prosper in Mediterranean climates with cool, wet winters and hot, dry … It invades roadsides, watercourses and gaps in plantations. It is often associated with another
We review information on seeds of these species, considering seed production, seed rain, and the dynamics of seeds in three layers: leaf litter, … endangered Moroccan endemic, Argania spinosa (Sapotaceae). A magnificent Camel thorn (Acacia erioloba) in Kathu in the North West Province. It was introduced to Zimbabwe for tanbark (Maroyi, 2015). the cutting or damage to the tree in any way, while in the more desert areas the lower
This genus has been provisionally divid… These originate in the epidermis ("skin") and are always short and curved, a bit like rose thorns. deciduous bushland and thicket the woody species of the characteristic dense, 3-5 m tall
In Dhofar A. tortilis subsp. (White (1983), mapping unit 79 pro parse), and succulent sub-Mediterranean shrubland
South Africa has a plethora of iconic, indigenous trees that add to the beauty of South African biodiversity. This is one of South Africa's most beautiful and useful trees. The subject of countless thousands of silhouette sunset photos (like the one above), this picturesque tree is inextricably linked with vast African savannas … scattered small trees and shrubs as Acacia erioloba, A. mellifera subsp. Acacia trees and shrubs come from the Acacia genus, Fabaceae (legume) family, and Mimosoideae subfamily. SouthAfrica.co.za delivers factual and educational information on indigenous trees, such as the grand Baobab and Marula trees, the sausage tree and the quiver tree. Larvae of Bruchophagus acaciae(Cameron) (Hymenoptera: Eurytomidae) develop in the seeds of acacias. emarginata, Prosopis cineraria, Salvadora oleoides and Ziziphus
We explore whether B. acaciaehas a role as a con- trol agent for acacias in South Africa. Vachellia karroo, also commonly known as the Sweet Thorn, is part of the acacia specie and native to southern Africa. species are presented in Table 3.6. scattered hamlets and villages, a large part of the which leading a nomadic or
Several cladistic analyses have shown that the genus Acacia is not monophyletic. There is no herbicide or biological control agent registered for this species in South Africa. Over much of the area many centuries
The recorded uses of Acacia
Fast growing in well-drained, sunny position with ample watering. Native to the coastal and tableland districts of central and northern New South Wales of Australia, but has also naturalised to the West Coast (Perth). There is no herbicide or biological control agent registered for this species in South Africa. Those outside Australia are split between the genera Acaciella, Mariosousa, Senegalia, and Vachellia. The showy yellow mimosa cut flowers, Acacia dealbata and Acacia baileyana, hail from southeastern Australia. This tree is threatened by a serious die-back disease with symptoms similar to the die-back typically caused by members of the In areas of European settlement commercial ranching (cattle, sheep, goats and ostrich),
Gum acacia (Acacia senegal), native to the Sudan region in Africa, yields true gum arabic, a substance used in adhesives, pharmaceuticals, inks, confections, and other products. charcoal, tool handles and other domestic uses. T. articulate) (UNESCO, 1977). A wide variety of products use gum arabic. There are actually 51 recognized species, subspecies (ssp) and varieties (var) of the genus Acacia, that occur within the borders of South Africa. 7-12 pairs of leaflets per pinnae and tardily dehiscent pods; A. nilotica is absent
to regenerate from seed during years with higher than usual rainfall. Special horticultural attributes: Bush encroachers, whic… spp. were also sampled in cases where they were present in the same areas as A. mellifera. Due to its slow growth its potential for rehabilitating the former vegetation
In the only recorded case of an indigenous species as an invader species, Theron (1978) noted Acacia ataxacantha as an aggressive invader species in eastern South Africa. Boscia albitrunca, B. foetida, Ehretia rigida and Grewia flava. Competes with and replaces indigenous species, reducing species richness and diversity. association with Euphorbia resinifera. abundant in the northern parts despite the continued dominance of Acacia spp. Most African species have not yet been renamed according to the new taxonomy. Pastoralism with some rain-fed and irrigated cultivation in the river valleys are the main
The bark is red while young and will with time become rough and a deep … Major species. "The controversy over the retypification of Acacia Mill. Within South Africa, the fynbos biome is the greatest casualty of Australian Acacia invasions and the most studied (van Wilgen et al., 2011). turgidum (Walter and Breckle, 1986), while the inland plain as far as the foothills
species of the dense bushland is Tarchonanthus camphoratus; associated species include Acacia
Red Sea and Persian Gulf consists of open Acacia-Maerua savanna with Acacia
Typical coastal vegetation of the
The uses of the Acacia
It is called “Umbrella Thorn” because of its notable umbrella-shaped tops. Eugene Moll, chairman of the council of the Botanical Society of South Africa, reports in Veld & Flora that the appeal was made "without much, if any official, consultation with all African, South American and Asian citizens." Total: 155 species (including 5 hybrids) Aca = subgenus Acacia ---> will be Vachellia Acu = subspecies Aculeiferum ---> will be Senegalia Ph = subspecies Phyllodineae (only Madagascar) ---> will be Acacia. Let’s take a look at some of the most common trees in South Africa and how they adapt in the African climate: 1. Woody plants (trees or shrubs): several Australian Acacia species (A. implexa, A. longifolia, A. paradoxa and A. pycnantha); two lebbeck trees (Albizia ... Alien weeds and invasive plants. While the subg. Acacia mearnsii and Acacia melanoxylon are two such invaders in the southern Cape of South Africa which occasionally co-occur with a native, ecologically analogous species, Virgilia divaricata . Habia, 50 km northwest of Gabes was felled some 15 years ago (Aronson et al., 1993). major component of some of the vegetation types. The pods of A. nilotica (under the name of neb-neb), and of other African species, are also rich in tannin and used by tanners. Phyllodinae are monophyletic, subg. guerichiana and Rhigozum virgatum. be unable to survive in southern Morocco without A. gummifera and its products
The Garden Route is one of the most beautiful stretches of coastline in South Africa, and is home to the coastal villages of Plettenberg Bay, Knysna … In total, ten agent species have been released in South Africa for the biological control of ten invasive Australian Acacia species and Paraserianthes lophantha (Willd.) and 56) are Acacia erioloba, A. fleckii, A. hebeclada, A.
plains of central Morocco, at the base of the mountains to the south of Oum or Rbia and
Categories: Trees. First of all South Africa has a lot of water problems and trees that are cut down take many many years to grow back to the size they were before they were cut down. … The fine leaves are either … Acacia trees are without a doubt the most iconic trees in Africa (besides baobabs, a close runner-up). A number of Australian Acacia species were introduced into South Africa in the early nineteenth century as ornamentals, for timber, and to stabilize drifting sand. More information on the propagation of Acacia can be found on our 'Growing Native Plants' site. Continued dominance of Acacia species in South Africa have become an enormous problem, due their... Cyclops ( Fabaceae ) Alternative common names: Rooikrans some other thorny species! Provisionally divided into 5 genera, see Acaciella, Mariosousa, Senegalia, and! Degraded by over-grazing and excessive cutting of fuelwood ( Bhandari, 1990 ) will have... 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