Moluccan Ailanthus (Ailanthus moluccanus)

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Ailanthus Moluccanus: Giant Tree of the Moluccas

Deep within the moist tropical forests of the Moluccan archipelago, Ailanthus moluccanus develops into a prominent canopy-dwelling tree. This species is highly adapted to tropical rainforest environments, where it competes for sunlight in the upper forest layers.

The tree plays a significant ecological role in its island habitat by hosting native epiphytes and insects. Its canopy provides a crucial nesting habitat for local bird species.

Taxonomy

  • ∟ царство Plantae
  • ∟ division Tracheophytes (Vascular Plants)
  • ∟ subdivision Spermatophytes (Seed plants)
  • ∟ Angiosperms
  • ∟ mesangiosperms (Core angiosperms)
  • ∟ eudicots
  • ∟ Superrosids
  • ∟ rosids
  • ∟ malvids
  • ∟ order Sapindales
  • ∟ family Simaroubaceae (Quassia family)
  • ∟ genus Ailanthus (Tree of heaven)
  • ∟ species Ailanthus moluccanus (Moluccan Ailanthus)

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Morphology

This tree is characterized by its impressive height, often reaching into the upper canopy of undisturbed forests. The trunk is straight, and the bark is light grey with distinctive lenticels that facilitate gas exchange.

Important botanical details include:

  • Compound Leaves: Very long, spirally arranged leaves that gather at the ends of thick twigs, featuring glossy, leathery leaflets.
  • Inflorescences: Large panicles bearing small, inconspicuous flowers with a yellowish-green hue.
  • Samaras: Elongated, papery winged fruits that twist as they fall, ensuring maximum dispersal by wind currents.

Applications

Local artisans harvest the soft, lightweight wood of this tree for carving, light box construction, and general carpentry. The timber is valued for its ease of processing and uniform texture.

Ecologically, the tree assists in watershed protection by reducing soil erosion on steep tropical slopes. Its leaf litter decomposes rapidly, returning vital nutrients back into the forest soil.

Interesting facts

The seeds of this species possess a specialized wing structure that enables them to helicopter down to the forest floor. This aerodynamic design increases their chances of reaching sunny gaps far from the mother tree.

Its specific epithet refers directly to the Moluccas, the historical spice islands where this taxon was first described by early European naturalists.

Geography of distribution

  • Indonesia (Maluku Islands)

Sources

  • Plants of the World Online (POWO): Taxonomy database by the Royal Botanic Gardens, Kew.
  • World Flora Online (WFO): Global descriptive database of plant species.
  • Global Biodiversity Information Facility (GBIF): International data network on biodiversity occurrences.

Technical Information

External Databases: Tropicos

See also

White Siris

White Siris

Ailanthus triphysa

A tall evergreen rainforest tree native to Asia and Australia, famous for its aromatic halmaddi …

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