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Ziziphus mucronata

Ziziphus mucronata, commonly known as the buffalo thorn or blinkblaar-wag-'n-bietjie, is a deciduous to semi-evergreen shrub or small to medium-sized tree in the family Rhamnaceae, native to sub-Saharan Africa and parts of the Arabian Peninsula. It typically grows 3–17 meters tall with a spreading, irregular crown up to 10 meters wide, featuring paired axillary thorns—one straight and one hooked—that provide natural defense against herbivores. The plant bears glossy, ovate, 3-nerved leaves (2–8 cm long) that are dentate and slightly hairy beneath, small yellowish-green flowers in axillary clusters from October to April, and subglobose, reddish-brown drupes (12–20 mm in diameter) ripening from February to September in southern regions.^[1]^[2]^[3] Widely distributed across tropical and southern Africa—from Senegal and Ethiopia in the north, southward through countries including Kenya, Tanzania, Zambia, Zimbabwe, Botswana, Namibia, South Africa (all provinces except Western Cape), Mozambique, and Swaziland, extending to Madagascar and Yemen—it thrives in diverse habitats such as dry savannas, open woodlands, riverbanks, forest margins, and scrublands at elevations up to 2,000 meters. The species tolerates a range of soils, including sandy and rocky types, and is resilient to drought, heat, and light frost, though it prefers well-drained conditions and indicates the presence of underground water in arid areas. Ecologically, it plays a key role in supporting biodiversity, providing forage for wildlife like giraffes, elephants, rhinos, and birds, while its nectar attracts bees; it is classified as of least concern conservation-wise, despite localized threats from overharvesting of bark and roots.^[1]^[2]^[3]^[4] Z. mucronata holds significant cultural, medicinal, and economic value in indigenous African communities. Traditionally, various parts—roots, stem bark, leaves, and fruits—are used in ethnomedicine to treat ailments such as diarrhea, dysentery, respiratory infections, sexually transmitted diseases, skin conditions, and pain, with pharmacological studies confirming its antimicrobial (effective against Staphylococcus aureus, Mycobacterium tuberculosis, and Candida albicans), antioxidant, anti-inflammatory, antidiabetic, and antiplasmodial properties in vitro. The edible fruits, though sometimes bitter, are consumed raw, dried for porridge, or fermented into beverages, while young leaves serve as a nutritious vegetable ("morogo") rich in protein; leaves and pods also provide valuable fodder for livestock, offering 10–20% crude protein and supporting ruminant nutrition in arid regions. Additionally, the wood is utilized for fuel, fencing, and crafts, and the plant's thorny nature makes it ideal for live hedges and soil stabilization.^[1]^[3]^[4]

Taxonomy

Classification

Ziziphus mucronata is a species within the genus Ziziphus in the family Rhamnaceae, which belongs to the order Rosales. Its full scientific classification follows the standard hierarchy for flowering plants: Kingdom Plantae, Phylum Tracheophyta, Class Magnoliopsida, Order Rosales, Family Rhamnaceae, Genus Ziziphus, and Species mucronata.^[5] The accepted name is Ziziphus mucronata Willd., first published by Carl Ludwig Willdenow in 1809 based on specimens from southern Africa.^[5]

Taxonomic Rank	Name
Kingdom	Plantae
Phylum	Tracheophyta
Class	Magnoliopsida
Order	Rosales
Family	Rhamnaceae
Genus	Ziziphus
Species	mucronata

The species is divided into two subspecies: the nominate Z. mucronata subsp. mucronata, which is widespread across its range and typically hairless except for short pubescence on leaf veins beneath; and Z. mucronata subsp. rhodesica R.B.Drumm., distinguished by denser pubescence on leaves and branches, occurring from southern Tanzania to northern Botswana.^[5]^[6] Several names have been recognized as synonyms of Z. mucronata over time, reflecting historical taxonomic revisions in botanical literature. Accepted synonyms include Ziziphus baclei DC. (described in 1825) and Ziziphus madecassa H.Perrier (described in 1943), both now considered heterotypic synonyms of the nominate subspecies Z. mucronata subsp. mucronata.^[7]^[8] Other historical synonyms from older texts encompass Ziziphus adelensis Delile, Ziziphus bubaliana Schult., and Ziziphus mitis A.Rich., which were reclassified into Z. mucronata as understanding of morphological variation improved.^[3] The placement of Z. mucronata in the Rhamnaceae family underscores its relation to other thorny shrubs and trees in the genus Ziziphus, which currently includes 71 accepted species distributed mainly across tropical and subtropical regions of the Old World.^[9] Within this genus, Z. mucronata is distinguished from economically significant relatives like Ziziphus jujuba Mill., the common jujube, which is widely cultivated for its edible fruit and shares similar spiny habits but differs in fruit characteristics and broader Asian distribution.^[9] Taxonomic studies emphasize the genus's diversity in Africa, where Z. mucronata represents a key indigenous species adapted to dry biomes.^[5]

Etymology and common names

The genus name Ziziphus originates from the Arabic term "zizouf," an ancient name for the jujube tree (Ziziphus jujuba), reflecting the fruit-bearing nature of species in this genus, which produce drupes reminiscent of jujubes.^[10] The specific epithet mucronata derives from the Latin "mucronatus," meaning "tipped with a short, sharp point" or "mucronate," a reference to the pointed tips of the plant's leaves.^[11] This nomenclature highlights the botanical characteristics that distinguish the species within the Rhamnaceae family.^[1] In English, Ziziphus mucronata is widely known as buffalo thorn, a name evoking its robust, paired thorns and frequent occurrence in habitats grazed by buffalo.^[12] The Afrikaans common name blinkblaar-wag-'n-bietjie translates to "shiny leaf, wait a bit," alluding to the glossy, bright green leaves and the hooked thorns that snag passersby, causing them to pause.^[12] Among Zulu speakers, it is called umLahlankosi, meaning "the one that frightens the chief" or "which buries the chief," a term tied to its cultural role in marking gravesites for tribal leaders, symbolizing protection and reverence in traditional practices.^[4] Regional names in other African languages further illustrate the plant's ecological and cultural significance. In Shona, it is referred to as muchecheni or chinanga, names that may emphasize its thorny, resilient form in savanna environments.^[13] In Tswana, mokgalo highlights its utility in rural settings, while variations like umphafa appear in isiXhosa and related Southern Bantu languages, often denoting its multifunctional presence in local landscapes and folklore.^[1] These names collectively reflect how the tree's defensive thorns, edible fruits, and symbolic uses shape its identity across diverse African communities.^[12]

Distribution and habitat

Geographic range

Ziziphus mucronata is native to approximately 42 countries across tropical and southern Africa—from Senegal in the west to Ethiopia and Somalia in the east, southward through central and eastern Africa to South Africa (all provinces except Western Cape, including Limpopo, Mpumalanga, KwaZulu-Natal, Eastern Cape, Northern Cape, North West, Gauteng, and Free State), as well as Botswana, Namibia, Zimbabwe, Mozambique, Malawi, Zambia, Tanzania, Kenya, Angola, Nigeria, DR Congo, Uganda, and many others—plus Madagascar and parts of the Arabian Peninsula, specifically Yemen and Saudi Arabia.^[5]^[14]^[12]^[3] Outside its native range, Z. mucronata has been introduced and cultivated in subtropical and warm temperate regions, including Australia, primarily as an ornamental tree or for use in hedges due to its drought tolerance and thorny branches.^[3]^[15] The plant's historical spread beyond native areas is attributed to human cultivation for practical and aesthetic purposes, as well as natural seed dispersal by birds that consume its fruits and excrete viable seeds over distances.^[16]^[17] This has led to evidence of naturalization in some non-native locations, particularly where environmental conditions mimic its preferred savanna habitats, such as in northern Australia where it has become an environmental weed.^[3]

Preferred habitats

Ziziphus mucronata thrives in a variety of semi-arid and arid ecosystems, particularly bushveld and savanna woodlands characterized by thorny vegetation, as well as riverine areas and rocky outcrops.^[3]^[4] It is well-adapted to open scrublands, forest margins, and dry grasslands, often forming dense thickets in these environments.^[4]^[12] This species is highly tolerant of drought conditions and can persist in nutrient-poor soils, making it a resilient component of disturbed or marginal habitats across its native range.^[3]^[12] The plant prefers well-drained sandy to loamy soils, including alluvial deposits along rivers, though it tolerates a broad spectrum from shallow rocky lithosols to clayey or slightly saline substrates.^[4]^[3] Optimal soil pH ranges from 5.5 to 8, with tolerance extending to 5–9, allowing growth in both acidic and alkaline conditions.^[3] Climatically, it favors drier tropical and subtropical regions with annual rainfall of 400–800 mm, though it can endure 300–1,000 mm and temperatures from 12–30°C during the day, with frost tolerance down to -7°C in some varieties and exceptional hardiness to -25°C in others.^[3]^[18] It also withstands coastal salt spray and saline winds, enhancing its suitability for brackish or exposed sites.^[4] Ziziphus mucronata occurs from near sea level up to altitudes of 2,000 m, commonly found between 100–1,800 m in varied topographies.^[3]^[4]^[19]

Description

Morphology

Ziziphus mucronata is a small to medium-sized deciduous tree, typically reaching 3–10 m in height, though it can grow up to 17 m under optimal conditions, with a spreading, rounded canopy that often branches low on the trunk or develops multiple stems. The overall form is shrubby or tree-like, with a frequently crooked trunk and drooping branches that create a distinctive silhouette.^[12]^[20] The bark is smooth and grey-brown on young trees, becoming darker, rough, and fissured with age, while slash wood reveals a crimson interior. Branches are spreading and often zig-zag, with young twigs green and covered in fine hairs that mature to reddish-brown and eventually mottled grey; they bear paired axillary spines, one straight and up to 2 cm long, the other hooked and shorter at about 1 cm.^[21]^[20]^[2] Leaves are alternate, simple, and broadly ovate to ovate, measuring 2–8 cm long by 1.5–6 cm wide, with an asymmetric base, three prominent veins from the base, glossy green upper surface, and a mucronate tip; margins are finely toothed, and the petiole is 2–13 mm long, often with some pubescence.^[21]^[2]^[22] Flowers are small, greenish-yellow, and bisexual, occurring in axillary clusters of 5–15 on peduncles 5–15 mm long, with sepals 1.5–2 mm and petals 1–1.5 mm. The fruit is a globose to ovoid drupe, 10–20 mm in diameter, turning reddish-brown and glossy when ripe, enclosing one to two hard seeds within a dry, mealy pulp.^[21]^[2]^[20]

Phenology

Ziziphus mucronata is a deciduous species that sheds its leaves during the dry winter period in its native southern African range. Leaf flush typically begins in early spring, around mid-October, marking the onset of the growing season, with mature leaves present from December through May. Dry leaves are often retained on the tree until August, providing some browse availability during the drier months. The tree exhibits rapid growth during the wet summer season, potentially reaching 4-6 meters in height within 4-5 years under favorable conditions.^[3]^[23]^[20] Flowering occurs from October to April, coinciding with the southern hemisphere's spring and summer. The small, greenish-yellow, hermaphroditic flowers are borne in axillary clusters and attract insect pollinators. Active growth aligns with this period, from October to March, supporting reproductive development.^[1]^[20]^[23] Fruiting follows flowering, with ripe drupes appearing from February to August, and sometimes extending to September. Fruits ripen progressively after the flowering peak, turning reddish-brown, and dry fruits may persist on the tree until July or later. Germination can be significantly improved by scarifying or partially removing the hard endocarp to overcome dormancy, with rates up to 65% reported for mechanical scarification.^[1]^[23]^[24] Mature individuals exhibit peak productivity in terms of flowering and fruiting, contributing to the species' persistence in savanna ecosystems over several decades.^[20]

Ecology

Pollination and seed dispersal

Ziziphus mucronata exhibits entomophilous pollination, primarily facilitated by bees that are attracted to the flowers' nectar and pollen. The species displays protandrous synchronous dichogamy, where male and female phases occur sequentially within flowers, synchronized across the tree to promote outcrossing. This mechanism, combined with gametophytic self-incompatibility that halts pollen tube growth in self-pollinations, prevents autogamy and geitonogamy, ensuring higher fruit set through cross-pollination from compatible mates.^[3]^[25] Seed dispersal in Ziziphus mucronata is predominantly zoocorous, achieved through the consumption of its fleshy, red to brown fruits by birds and mammals. Avian dispersers, such as various frugivorous species including olive thrushes, Cape robin-chats, and speckled mousebirds, ingest the fruits and excrete viable seeds; gut passage improves germination speed but does not increase the rate. Mammals also contribute to dispersal by consuming fruits and passing hard seeds intact through their digestive tracts.^[26]^[27]^[28] Germination of Z. mucronata seeds requires scarification to overcome physical dormancy imposed by the impermeable endocarp, with mechanical abrasion or chemical treatments like sulfuric acid effectively breaking the seed coat to allow water uptake. Seeds are light-neutral and exhibit no embryo dormancy, achieving optimal germination at around 27°C in moist conditions, typically following seasonal rains that provide the necessary warmth and hydration in savanna environments. Intact fruits inhibit germination due to mechanical constraints and limited oxygen access, underscoring the adaptive value of animal-mediated dispersal.^[29]^[30]

Interactions with wildlife

Ziziphus mucronata serves as an important food source for a variety of browsing herbivores in its native African savannas, with leaves and young shoots consumed by species such as giraffes, impala, kudu, elephants, and black rhinoceroses.^[31] The tree's fruits are particularly relished by birds, baboons, monkeys, warthogs, and bushpigs, contributing to dietary diversity among frugivores and granivores.^[4] Additionally, its foliage and bark are browsed by domestic livestock during dry seasons, though this can lead to overexploitation in grazed areas.^[32] The plant exhibits several defensive adaptations against herbivory, including paired thorns—one straight and the other hooked—that restrict bite size and foraging efficiency for medium- to large-bodied browsers like bushbuck and goats.^[33]^[34] These physical traits help balance herbivore pressure while allowing moderate consumption that supports ecosystem dynamics. In savanna ecosystems, Ziziphus mucronata plays a key role by providing shade and microhabitat structure in thornveld and open woodlands, enhancing local biodiversity through shelter for small mammals, reptiles, and ground-nesting birds.^[3] It supports insect populations, including bees, butterflies, and other pollinators and prey species, which in turn attract insectivorous birds and bolster food webs.^[11] The tree may also contribute to soil fertility via potential associations with nitrogen-fixing actinomycetes, promoting nutrient cycling in nutrient-poor soils.^[35] Overall, its prevalence in mixed bushlands aids in maintaining ungulate populations and habitat heterogeneity without evidence of invasiveness in introduced ranges.^[36]

Uses

Medicinal uses

Ziziphus mucronata has been extensively utilized in African traditional medicine, particularly in southern and eastern regions, for treating a variety of ailments through decoctions, infusions, and poultices derived from its roots, bark, and leaves. Roots are commonly prepared as decoctions to alleviate pain, dysentery, diarrhea, snakebites, and stomach cramps, with applications noted among communities in South Africa, Zimbabwe, and Tanzania.^[1]^[3] Bark infusions address respiratory infections, sepsis, boils, swelling, and symptoms associated with malaria, such as fever, while also serving as a treatment for tuberculosis and general pain relief.^[1]^[37] Leaves are employed in pastes or infusions for managing respiratory infections, skin infections, boils, and tubercular swellings, with documented use in Zulu and Venda ethnobotany for wound healing and anti-inflammatory effects.^[1]^[3] The fruit is traditionally applied to soothe pain and inflammation, though such uses are less widespread compared to vegetative parts.^[1] Despite these applications, caution is advised, as high doses may be toxic (LD50 >5000 mg/kg in rats).^[14] Modern pharmacological studies have validated several traditional uses, identifying key phytochemicals such as flavonoids (e.g., catechin and rutin) and cyclopeptide alkaloids (e.g., mucronines) in the roots, bark, and leaves, which contribute to the plant's bioactivity. Recent studies as of 2024-2025 have further confirmed its antiplasmodial activity, attributing it to compounds like betulinic acid and lupeol.^[1]^[38] Anti-inflammatory properties are supported by in vitro assays showing methanol extracts inhibiting cyclooxygenase-1 and -2 enzymes (66.5% and 66.2% inhibition at 250 μg/ml, respectively), aligning with ethnobotanical claims for pain and swelling relief.^[1] Antimicrobial activity has been confirmed against pathogens like Staphylococcus aureus, Escherichia coli, and Candida albicans (MIC values <1 mg/ml), corroborating uses for infections, sepsis, and skin conditions, with minimal cytotoxicity observed (LD50 >5000 mg/kg in rats).^[1]^[37] These findings underscore Z. mucronata's potential as a source for developing natural therapeutics, though further clinical trials are needed to establish efficacy and safety.^[1]

Food and nutritional uses

The young leaves of Ziziphus mucronata can be cooked and consumed as a spinach substitute, though they are not particularly palatable.^[3] They provide notable nutritional value, with crude protein content ranging from 10% to 20% on a dry matter basis.^[4] In addition, the leaves are used as fodder for livestock, especially during dry seasons, where they offer 12% to 26% crude protein depending on seasonal variations, supporting animal nutrition in arid environments.^[39] The fruits of Z. mucronata are edible and consumed fresh, dried, or ground into meal for porridge, providing a mealy but nutritious option during food scarcity.^[4] In Namibia, the fruits contribute to the traditional brewing of ombike, a fermented beer made from indigenous wild fruits.^[40] Nutritionally, the fruits are high in vitamin C (up to 1000 mg per 100 g), along with sugars, dietary fiber, and antioxidants that enhance their dietary role.^[41] The seeds are roasted, crushed, and used as a coffee substitute in various traditional preparations.^[3] They contain around 20% lipids on a dry weight basis, offering potential for oil extraction in food applications.^[42]

Other practical uses

Ziziphus mucronata is widely utilized in agroforestry systems across its native range in Africa due to its thorny branches and robust growth. The species is commonly planted as live fences and hedges, forming impenetrable barriers that protect livestock and crops for over a decade, while its thorny structure deters intruders and wildlife.^[3] Additionally, it serves as windbreaks to reduce wind speeds and prevent soil erosion on vulnerable lands, including riverbanks, where its root system stabilizes soil and minimizes runoff.^[43]^[3] Its adaptability to poor, erosion-prone soils makes it particularly valuable in semi-arid regions for these purposes.^[20] The wood of Ziziphus mucronata is termite-resistant, dense, and fine-grained, rendering it suitable for various timber applications. It is harvested for building poles, posts, tool handles, and furniture, as well as for crafting items like bows, whips, and agricultural implements.^[20]^[12] The hard wood also provides excellent fuelwood and charcoal, burning slowly and with high energy yield.^[20] Furthermore, the bark, containing 12-15% tannins, is used in leather tanning processes and as a dyestuff for coloring materials.^[12]^[4] Beyond structural uses, Ziziphus mucronata supports additional practical applications. Its flowers attract bees, making it a valuable nectar source for honey production in apiculture systems.^[20] Ornamentally, the tree is planted in gardens for its attractive form and glossy foliage.^[4] For sustainable cultivation, propagation is achieved through seeds—pre-soaked for 6-8 hours to achieve 75% germination—or hardwood cuttings and root suckers, allowing rapid establishment in nurseries.^[3]^[20]

Cultural significance

Traditional practices

In various African communities, branches of Ziziphus mucronata, known as umLahlankosi among the Zulu, play a significant role in funeral ceremonies, particularly for marking the graves of chiefs to honor their memory and signify the burial site.^[12] This practice underscores the tree's symbolic importance in death rituals, where branches or leaves are incorporated to guide or retrieve the spirit of the deceased during traditional processes.^[44] Among the Basotho people, the tree is utilized in rain-making rituals, with parts such as roots or bark employed by traditional practitioners to invoke rainfall during ceremonial proceedings.^[45] The tree is often planted around homesteads in southern African communities to provide protection against evil spirits and lightning strikes, as its presence is believed to create a spiritual barrier and offer safety during storms.^[12] This protective custom reflects its integration into daily life for safeguarding homes and livestock enclosures. Socially, the fruits of Z. mucronata are fermented to produce traditional beer, which is shared communally during festivals and gatherings to foster social bonds and celebrations.^[12] The wood, valued for its durability, is crafted into walking sticks and staffs used in everyday and ceremonial contexts by various ethnic groups.^[45]

Folklore and beliefs

In various African traditions, Ziziphus mucronata, known as the buffalo thorn, is revered for its protective qualities against lightning, particularly in Venda and Tsonga communities where it is considered a "lightning tree" due to its susceptibility to strikes yet believed to safeguard users when branches are carried or planted near homesteads. Among the VhaVenda, the tree's thorns are anointed with magical medicines and affixed to fences for spiritual defense, including warding off lightning as a manifestation of ancestral or supernatural forces.^[46] Similarly, in broader southern African beliefs encompassing Tsonga and related groups, the plant is associated with repelling thunderous threats, reflecting deep-seated fears of natural disasters intertwined with witchcraft.^[47] Zulu folklore attributes profound spiritual powers to Z. mucronata, especially in rituals involving the deceased, where branches or twigs are used to retrieve or escort the spirit of the dead from the site of death back to the grave or ancestral realm. This practice underscores the tree's role as a conduit between the living and ancestors, with umlahlankosi (a Zulu name for the tree) planted on chiefs' graves to honor and connect with forebears. The paired thorns—one straight and pointing forward, the other hooked and curving backward—symbolize life's dual path, representing progress and reflection on the past, often invoked in narratives of trials and ancestral guidance.^[48] Associations with ancestors extend to divination practices across southern Bantu cultures, where Z. mucronata facilitates communication with spiritual entities through induced altered states, reinforcing its mythic status as a bridge to the ethereal world.^[49] Despite scientific skepticism, beliefs in Z. mucronata's mystical properties persist in modern urban settings, such as Durban's Umlazi township, where Zulu traditional healers continue to incorporate its branches in protective charms and rituals amid everyday challenges.^[50]

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Ziziphus mucronata - Find Trees & Learn | UA Campus Arboretum
Ziziphus mucronata, or buffalo thorn jujube, is from sub-Saharan Africa, grows in various habitats, and is used medicinally. It grows 16-20 feet tall and 11-15 ...Missing: scientific ecology
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Ziziphus mucronata: An underutilized traditional medicinal plant in ...
Aug 5, 2025 · Ziziphus mucronata, commonly known as buffalo thorn, belongs to the Rhamnaceae plant family and is mainly found in tropical regions. It is ...
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Ziziphus mucronata - category3
Nutritional value Fruits of ziziphus species contain an extremely high vitamin C portion: Oranges contain ~ 57mg/100g, whereas ziziphus species contain up to ...
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Chemical and Nutritive Composition of Buffalo Thorn (Ziziphus ...
Jan 14, 2021 · 6 Caloric Value. The caloric value of Z. mucronata seed was 2008.58 kcal. This value is high and as such could be recommended as a. dietary ...
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Ziziphus mucronata | Interactive Suitable Tree Species Selection ...
Ziziphus mucronata Willd. Link, Shade, Soil erosion control, Wind break. Cultural Uses.
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The customary significance of using 'ihlahlalomlahlankosi' in death ...
This study contributed to the African qualitative understanding of the significant use of Ihlahlalomlahlankosi/Umlahlankosi (tree branch/leaf), ...Missing: practices | Show results with:practices
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A review of the ethnobotany of the Basotho of Lesotho and the Free ...
... (rainmaking); axe handles, fence poles; walking sticks and assegai shafts ... Ziziphus mucronata Willd. Mokhalo, Food (fruits), Fox and Norwood Young (1982) ...
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[PDF] THE ETHNOBOTANY OF THE VHA VENDA - University of Pretoria
... Ziziphus mucronata. e. Thoms are anointed with magical medicines and nailed all along the fence of the homestead to keep away witches and others with ill ...
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[PDF] LIGHTNING MYTHS AND BELIEFS IN SOUTH AFRICA - CORE
Anthropologist Isaac Schapera devoted a whole book to the rainmaking rituals of the Kgatla people (Schapera, 1971), which is one of the Tswana tribes in ...
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### Summary of Ziziphus mucronata in Zulu Folklore, Beliefs, Lightning, Spirits, Ancestors
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(PDF) • A review of plants used in divination in Southern Africa and ...
Numerous indigenous healing traditions around the world employ plants with psychoactive effects to facilitate divination and other spiritual healing rituals ...
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[PDF] Cultural importance and antibacterial activity of Ziziphus mucronata ...
Nov 8, 2011 · The Zulu community of Umlazi, Durban makes extensive use of Ziziphus mucronata (Buffalo thorn) for predominantly cultural purposes.