Philippine hackberry (Celtis philippinensis)

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Celtis philippinensis: Botanical Characteristics and Distribution

Spanning an exceptionally wide geographical range from Madagascar to northern Australia, Celtis philippinensis adapts remarkably well to diverse tropical environments. Thriving in lowland forests, coastal scrublands, and rocky limestone terrains, this evergreen tree or shrub is a resilient ecological anchor across multiple continents.

Its extensive distribution makes it a fascinating subject for biogeographical studies, revealing how an adaptable species colonizes island archipelagos and continental margins alike.

Taxonomy

  • ∟ царство Plantae
  • ∟ division Tracheophytes (Vascular Plants)
  • ∟ subdivision Spermatophytes (Seed plants)
  • ∟ Angiosperms
  • ∟ mesangiosperms
  • ∟ eudicots
  • ∟ Superrosids
  • ∟ rosids
  • ∟ order Rosales
  • ∟ family Cannabaceae (Hemp family)
  • ∟ genus Celtis (Hackberry)
  • ∟ species Celtis philippinensis (Philippine hackberry)

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Morphology

The tree can reach up to 30 meters in height, although it often remains a smaller shrub in challenging coastal or rocky habitats. It produces small, inconspicuous flowers that rely on wind for pollination.

Distinctive morphological traits include:

  • Foliage: Leaves are prominently three-veined from the base, coriaceous (leathery), and ovate to elliptic.
  • Fruits: Ovoid fleshy drupes transition from green to a vibrant red or purplish-black upon maturity.
  • Bark: Generally pale, smooth to slightly fissured in older, mature specimens.

Applications

While not a major commercial timber species, the wood is resilient and utilized locally for everyday needs. The fibrous bark has historically served indigenous communities for making rough cordage and binding materials.

  • Timber: Harvested locally for light construction, firewood, and crafting tool handles.
  • Edibility: The fleshy fruits are edible and occasionally consumed by local populations.
  • Ecological Function: Fruits serve as a critical food source for frugivorous birds and fruit bats, which in turn facilitate seed dispersal.

Interesting facts

Because of its immense range across multiple continents and isolated islands, Celtis philippinensis exhibits considerable morphological variation, leading to numerous synonyms in historical botanical literature.

It is remarkably tolerant of alkaline soils and is frequently encountered thriving directly on exposed limestone karsts.

Geography of distribution

  • Philippines
  • Australia
  • Indonesia
  • Madagascar

Sources

  • Plants of the World Online (POWO)
  • Global Biodiversity Information Facility (GBIF)
  • World Flora Online (WFO)

Technical Information

External Databases: GBIF

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