Ciliate Mitragyna (Mitragyna ciliata)

Abura Bahia Subaha
Silhouette: T. Michael Keesey / License

Mitragyna ciliata: Ecology, Morphology, and Traditional Uses of Abura Wood

Thriving in the waterlogged environments of West and Central Africa, the evergreen tree Mitragyna ciliata plays a crucial role in local forest ecosystems and timber industries. This fast-growing species is commonly found along riverbanks and in swampy lowlands, where it forms dense stands. Local populations and commercial foresters highly prize the tree for its light, workable wood, known internationally as abura.

Taxonomy

  • ∟ царство Plantae
  • ∟ division Tracheophytes (Vascular Plants)
  • ∟ subdivision Spermatophytes (Seed plants)
  • ∟ Angiosperms
  • ∟ mesangiosperms (Core angiosperms)
  • ∟ eudicots
  • ∟ asterids
  • ∟ order Gentianales
  • ∟ family Rubiaceae
  • ∟ subfamily Cinchonoideae
  • ∟ tribe Naucleeae
  • ∟ genus Mitragyna (Kratom)
  • ∟ species Mitragyna ciliata (Ciliate Mitragyna)

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Morphology

Under optimal forest conditions, this species develops into a towering canopy tree reaching heights of up to 40 meters. The trunk is typically straight and cylindrical, often measuring over 1 meter in diameter and sometimes featuring small, supportive buttress roots at the base.

The botanical features of this plant include:

  • Leaves: Large, opposite leaves that are broadly elliptic or ovate in shape, reaching up to 30 centimeters in length and featuring ciliolate margins.
  • Flowers: Small, yellowish-green flowers packed tightly into dense, globose heads that measure about 2 to 3 centimeters in diameter.
  • Fruit: Small capsule-like fruits that split open to release numerous light, winged seeds designed for wind dispersal.

Applications

The wood harvested from this tree is traded globally under the name abura. It is highly valued for its uniform texture, ease of machining, and suitability for joinery, plywood manufacturing, and interior fittings. Because it resists acids, the timber is also used in laboratory fittings and specialized industrial containers.

In addition to timber, local communities utilize the bark and leaves in traditional medicine. Decoctions are prepared to manage feverish conditions and gastrointestinal discomfort.

Interesting facts

The species name ciliata refers to the microscopic hair-like structures, or cilia, found along the margins of its leaves and stipules. These features help botanists distinguish it from closely related members of the genus. Its capacity to thrive in permanently flooded soils makes it an important stabilizer of African wetland soils.

Geography of distribution

  • Ivory Coast
  • Ghana
  • Nigeria
  • Cameroon
  • Gabon
  • Republic of the Congo
  • Democratic Republic of the Congo
  • Liberia
  • Sierra Leone
  • Guinea
  • Central African Republic

Sources

Technical Information

External Databases: GBIF, POWO, Tropicos

See also