Agathis robusta, commonly known as Queensland Kauri or Smooth-barked Kauri, is a large evergreen conifer native to the rainforests of Queensland, Australia.
It can grow to impressive heights, often reaching 50 meters or more, with a straight, cylindrical trunk that is typically free of branches for much of its height.
Taxonomy:
- Family: Araucariaceae
- Genus: Agathis
Description:
- Growth: Large evergreen conifer can grow over 50 meters tall
- Bark: Smooth, greyish bark.
- Leaves: Broad, leathery, elliptical leaves that are dark green and glossy.
Habitat and Distribution:
This species is found in the coastal lowland rainforests of Queensland and Papua New Guinea. It thrives in well-drained, fertile soils and humid, tropical climates, forming a significant part of the upper canopy layer. Agathis robusta is a slow-growing, long-lived tree that can survive for several hundred years, depending on light, water, and nutrient availability.
Ecology and Uses:
- Habitat: As a canopy tree, it provides habitat and food for various wildlife and contributes to the rainforest’s structural integrity.
- Timber: The timber is prized for its strength, fine grain, and decay resistance, used in construction, furniture, and boat building. Over-exploitation has led to significant population reductions, prompting conservation efforts.
- Traditional Medicine: Indigenous Australian communities have historically used the tree’s resin for medicinal purposes, including treatments for wounds and ailments.
- Landscaping: Due to its impressive height and attractive foliage, Agathis robusta is sometimes planted as an ornamental tree in large gardens and parks.
Links:
Agathis robusta : Queensland Kauri | Atlas of Living Australia (ala.org.au)
