Maesa lanceolata

False assegai
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Primulaceae
Genus: Maesa
Species:
M. lanceolata
Binomial name
Maesa lanceolata

Maesa lanceolata, the false assegai, is a tree species that is widespread in the Afrotropics, including Madagascar.[1] It occurs from the southern Arabian Peninsula, southwards to the Eastern Cape, South Africa. It grows on stream verges, river banks and forest verges, where it is often a pioneer plant.

Description

Maesa lanceolata grows either as a shrub or tree, when growing as a tree, it is capable of reaching 10 m tall, but it has been observed to reach 20 m.[2] It has a grey, brown to reddish brown bark that is vertically fissured, the slash is pink turning brown with a dark reddish exudate.[3] Leaves are petiolate, with the petiole capable of reaching 4 cm long.[3] Leaflets are elliptical to lanceolate in outline, they can reach 16 cm in length and 7 cm in width with a margin that tends to be either serrate to crenate; the apex is acute and base is rounded to obsute.[3] Flowers are arranged in shortly pedunculate axillary panicles, they are numerous and white to yellowish in color.[3][2]

The fruits are yellow in color and globose in shape, they contain up to 20 seeds.

Ecology

The yellow fruits of the species are consumed by the Yellow-whiskered greenbul and the lolive-breasted mountain greenbul but can be toxic to humans.[4][2]

Distribution

Occurs in Tropical Africa and the Arabian peninsula. They are commonly found in montane forest and gallery forest environments.[2]

Chemistry

Oleane type pentacyclic triterpenoid saponins have been isolated from the leaves of the species,[5] also isolated from the leaves and fruits of the species is the bioctive benzoquinone, Maesanin.[6]

Uses

Though considered toxic to human the extracts of Maesa lanceolata have been used in different communities to treat various ailments. In East Africa root and fruit extracts are used by native healers in decoctions to treat cholera disease, tapeworm and sore throat.[7]


  • Spirally arranged leaves
    Spirally arranged leaves
  • Inflorescence
    Inflorescence
  • Fruit
    Fruit

References

  1. ^ "Maesa lanceolata Forssk". African Plant Database. Conservatoire et Jardin botaniques & SANBI. Retrieved 25 November 2014.
  2. ^ a b c d Lemmens, Rudolphe (2023). Useful Trees of East Africa. Books on Demand. p. 210. ISBN 9782322546336.
  3. ^ a b c d Dale, Ivan Robert; Greenway, Percy James (1961). Kenya trees & shrubs. Buchanan's Kenya Estates. p. 331. OCLC 1035929216.
  4. ^ Graham, Catherine; Moermond, Timothy; Kristensen, Kurt; Mvukiyumwami, Joseph (1995). "Seed Dispersal Effectiveness by Two Bulbuls on Maesa Lanceolata, an African Montane Forest Tree". Biotropica. 27 (4): 479–86. doi:10.2307/2388961.
  5. ^ Sindambiwe JB, Calomme M, Geerts S, Pieters L, Vlietinck AJ, Vanden Berghe DA. Evaluation of biological activities of triterpenoid saponins from Maesa lanceolata. J Nat Prod. 1998 May;61(5):585-90. doi: 10.1021/np9705165. PMID 9599254.
  6. ^ Muhammad, I., Takamatsu, S., Walker, L.A., Mossa, J.S., Fong, H.H.S. and El-Feraly, F.S. (2003), Cytotoxic and antioxidant activities of alkylated benzoquinones from Maesa lanceolata. Phytother. Res., 17: 887-891. https://doi.org/10.1002/ptr.1237
  7. ^ Paul O. Okemo, Harsh Pal Bais, Jorge M. Vivanco. In vitro activities of Maesa lanceolata extracts against fungal plant pathogens. Fitoterapia,Volume 74, Issue 3,2003, Pages 312-316. ISSN 0367-326X. https://doi.org/10.1016/S0367-326X(03)00039-X.

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