Arnhem Land Quassia (Quassia arnhemensis)

Silhouette: T. Michael Keesey / License

Quassia arnhemensis: Rare Shrub Native to Northern Territory, Australia

Isolated sandstone landscapes of Arnhem Land shelter Quassia arnhemensis, a rare plant species native to the Northern Territory of Australia. Described by botanists Lyndley Alan Craven and Clyde Robert Dunlop, this species is highly adapted to the unique climatic conditions of northern Australia. It represents an important component of the region's endemic biodiversity.

Taxonomy

  • ∟ царство Plantae
  • ∟ division Tracheophytes
  • ∟ subdivision Spermatophytes (Seed plants)
  • ∟ Angiosperms
  • ∟ mesangiosperms
  • ∟ eudicots
  • ∟ Superrosids
  • ∟ rosids
  • ∟ malvids
  • ∟ order Sapindales
  • ∟ family Simaroubaceae (Quassia family)
  • ∟ genus Quassia (Quassia Wood)
  • ∟ species Quassia arnhemensis (Arnhem Land Quassia)

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Morphology

The species grows as a small, resilient shrub suited to rocky substrates and seasonal monsoonal conditions. Its leaves are structurally adapted to minimize water loss, showing characteristics typical of Australian dry-tropical flora. The small flowers are followed by specialized seed pods that aid in reproduction within fire-prone ecosystems.

Interesting facts

The specific epithet arnhemensis refers directly to Arnhem Land, a vast wilderness area where the plant was first collected. This species survives in remote sandstone crevices that protect it from severe seasonal bushfires.

Geography of distribution

  • Australia

Sources

  • World Flora Online (WFO) — Taxonomic placement within the Simaroubaceae family.
  • Catalogue of Life — Species description and synonymy database.
  • Global Biodiversity Information Facility (GBIF) — Georeferenced occurrence records from northern Australia.

Technical Information

External Databases: GBIF, POWO, Tropicos

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