Uvaria afzelii

Uvaria afzelii

Uvaria afzelii

Common Names: Cluster Pear, Bush Banana, Finger-Root
Local Names: Eru-Iju, Gbogbonse, Anikan-Wogba Arun (Yoruba, Nigeria), Mmimiohia (Igbo, Nigeria), Akpa (Efik, Nigeria)
Species ID: NMP-190 |
wfo-0001066514;NCBI_Taxonomy ID: 1144408

Scientific Classification

Kingdom: Plantae

Clade: Tracheophytes

Clade: Angiosperms

Clade: Magnoliids

Order: Magnoliales

Family: Annonaceae

Genus: Uvaria

Species: U. afzelii

Binomial Name: Uvaria afzelii Scott-Elliot

Synonyms: Uvaria barteri Baker f., Uvaria scabrida Oliv.

Morphological Description

Uvaria afzelii, known as Cluster Pear, is a climbing shrub or small tree, typically 3–10 m tall, occasionally reaching 15 m when supported by other vegetation. It is characterized by:

·       Stems: Woody vines, densely covered with short, rust-colored hairs, scrambling or twining

·       Leaves: Heart-shaped to ovate, 8–20 cm long, 5–12 cm wide, glossy dark green, with a velvety texture beneath

·       Flowers: Fragrant, yellow to orange, 2–4 cm in diameter, with hairy petals, appearing in clusters from March to June

·       Fruit: Aggregate, grape-like clusters, 3–8 cm long, green turning yellow-orange when ripe, with a sweet-sour taste

The name "Uvaria" derives from Latin "uva" (grape), reflecting its clustered fruit (LinLin et al., 2009).

Distribution and Habitat

Uvaria afzelii is native to West and Central Africa, including Nigeria, Cameroon, Ghana, Sierra Leone, and Côte d’Ivoire. It thrives in:

·       Habitats: Secondary forests, forest edges, savannah woodlands, and riverine thickets

·       Climate: Tropical, with rainfall of 1,200–2,500 mm annually, temperatures of 22–32°C

·       Soil Conditions: Well-drained loamy or sandy soils (pH 5.0–6.5), often climbing over shrubs or trees

·       Elevation: Sea level to 1,200 m

Its scrambling habit aids its spread in disturbed areas (Orwa et al., 2009).

Ethnopharmacology

Uvaria afzelii is a medicinal plant native to West and Central Africa, traditionally used for its wide range of therapeutic properties. Various parts of the plant, especially the roots, bark, and leaves, are utilized in ethnomedicine for their antimicrobial, anti-inflammatory, analgesic, antioxidant, and antimalarial effects. It is commonly used to treat ailments such as fevers, malaria, stomach disorders, wounds, skin infections, and pain-related conditions. Some traditional practices also employ the plant in managing reproductive and urinary tract issues. Phytochemical screenings have revealed the presence of alkaloids, flavonoids, tannins, saponins, and terpenoids, which are associated with its biological activities. Though its use is well-established in traditional healing systems, more pharmacological and clinical studies are needed to validate its medicinal potential and determine safe therapeutic dosages.

·       Antibacterial/Antifungal: Root extracts inhibit Staphylococcus aureus (MIC 62.5 µg/mL) and Candida albicans (MIC 125 µg/mL), used in Nigeria for skin infections (Okoli & Iroegbu, 2004).

·       Anti-inflammatory: Leaf decoctions reduce paw edema in rats (50% at 200 mg/kg), applied in Ghana for arthritis and swellings (Jalil et al., 2020).

·       Antioxidant: Leaf extracts show DPPH radical scavenging (IC₅₀ 18.3 µg/mL), used in Cameroon to combat oxidative stress (Ajiboye et al., 2014).

·       Antimalarial: Stem bark extracts exhibit antiplasmodial activity.

·       Analgesic: Root infusions relieve pain in mice (ED₅₀ 150 mg/kg), used in Côte d’Ivoire for headaches and body aches (Jalil et al., 2020).

·       Gastroprotective: Leaf poultices treat stomach ulcers in Nigeria.

⚠  Toxicity Profile: No acute toxicity at traditional doses.

Phytochemistry

The plant’s medicinal properties stem from a diverse phytochemical profile:

·       Acetogenins: Uvaricin, squamocin, with antimicrobial and cytotoxic effects

·       Flavonoids: Quercetin, kaempferol, providing antioxidant and anti-inflammatory benefits

·       Alkaloids: Antimalarial and analgesic agents in roots and bark

·       Tannins: Astringent compounds aiding wound healing

·       Essential Oils: Contribute to its fragrance and antimicrobial properties

Additional Uses

·       Edible Uses: Fruits (rich in vitamin C) eaten raw or juiced in Nigeria; leaves occasionally cooked as a vegetable (Orwa et al., 2009)

·       Ecological Uses: Stabilizes soil in forest undergrowth; supports pollinators with fragrant flowers

·       Industrial Uses: Fibrous stems used for cordage in rural Ghana

·       Cultural Uses: Leaves used in Yoruba rituals for purification

References

  • Jalil, J., Attiq, A., Hui, C. C., Yao, L. J., & Zakaria, N. A. (2020). Modulation of inflammatory pathways, medicinal uses and toxicities of Uvaria species: Potential role in the prevention and treatment of inflammation. Inflammopharmacology, 28, 1195–1218.
  • LinLin, Z., Su, Y. C. F., & Saunders, R. M. K. (2009). Molecular phylogenetic support for a broader delimitation of Uvaria (Annonaceae), inclusive of Anomianthus, Cyathostemma, Ellipeia, Ellipeiopsis, and Rauwenhoffia. Systematics and Biodiversity, 7(3), 249–258.
  • Okoli, A. S., & Iroegbu, C. U. (2004). Evaluation of extracts of Anthocleista djalonensis, Nauclea latifolia and Uvaria afzelii for activity against bacterial isolates from cases of non-gonococcal urethritis. Journal of Ethnopharmacology, 92(1), 135–144.
  • Orwa, C., Mutua, A., Kindt, R., Jamnadass, R., & Anthony, S. (2009). Agroforestree Database: A tree reference and selection guide version 4.0. World Agroforestry Centre.

External Links

More Pictures

 

Compounds of Uvaria afzelii
References

Famuyiwa, S. O. (2019). Isolation and characterization of campest-5-en-3-ol from the root bark of Uvaria Afzelii. Ife Journal of Science, 21(3), 257-261.