Sumatran Gironniera (Gironniera sumatrana)

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Gironniera sumatrana: Botanical Characteristics and Distribution

Growing in the dense tropical rainforests of Southeast Asia, this evergreen tree stands out due to its resilience and ecological importance. It forms an integral part of the primary and secondary forest canopies, providing shelter and sustenance to various forest organisms.

Local communities occasionally utilize the tree, though it remains largely uncultivated. Its adaptation to humid tropical climates makes it a key component of Malesian forest ecosystems.

Taxonomy

  • ∟ царство Plantae
  • ∟ division Tracheophytes
  • ∟ subdivision Spermatophytes (Seed plants)
  • ∟ Angiosperms
  • ∟ mesangiosperms
  • ∟ eudicots
  • ∟ Superrosids
  • ∟ rosids
  • ∟ order Rosales
  • ∟ family Cannabaceae (Hemp family)
  • ∟ genus Gironniera (Gironnier tree)
  • ∟ species Gironniera sumatrana (Sumatran Gironniera)

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Morphology

This evergreen tree typically reaches heights of up to 30 meters, featuring a straight trunk with greyish-brown bark. The branchlets are covered in fine, short hairs when young, gradually becoming glabrous as they mature.

The botanical structure is characterized by several distinct features:

  • Leaves: The leaves are arranged alternately, with a coriaceous texture and an elliptic-oblong shape. They measure up to 15 centimeters in length and feature prominent pinnate venation.
  • Flowers: Small, unisexual flowers develop in axillary cymes. The species is dioecious, meaning male and female flowers grow on separate individuals.
  • Fruit: The female flowers mature into small, ovoid or globose drupes. These fruits turn orange or yellow when ripe and contain a single hard seed.

Applications

The heavy wood is harvested locally on a small scale for simple construction projects. It serves as a durable material for creating poles, tool handles, and temporary agricultural structures.

Ecological applications are also notable. The tree helps prevent soil erosion in hilly rainforest terrains and contributes to the restoration of degraded forest land.

Interesting facts

The tree's fruits serve as a valuable food source for local birds and small mammals, facilitating seed dispersal throughout the forest. Additionally, its tough bark provides resistance against minor physical damage and forest pathogens.

Geography of distribution

  • Indonesia
  • Malaysia

Sources

  • World Checklist of Selected Plant Families (WCSP)
  • Plants of the World Online (POWO)
  • Global Biodiversity Information Facility (GBIF)

Technical Information

External Databases: GBIF, POWO, Tropicos

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