Santalum spicatum

Santalum spicatum, commonly known as the Australian sandalwood or western sandalwood, is a species of plant in the Santalaceae family. It is native to semi-arid areas of southwest Australia. This species is notable for its aromatic heartwood, which has been historically valued for use in perfumes, incense, and medicinal applications. The wood and oil of Santalum spicatum have been an important part of the Australian Aboriginal culture and economy, as well as a significant export product in the international market.

Description

Santalum spicatum is a small tree or large shrub, typically reaching 4 to 8 meters in height. It has a slow growth rate and can live for over 100 years. The leaves are lanceolate or elliptical, grey-green in color, which helps in reducing water loss. The plant is hemiparasitic, relying on host plants for a portion of its nutrients and water needs through a root connection. Its flowers are small, with a pale green to yellow color, and are followed by fleshy, spherical fruits that turn purple when ripe.

Habitat and Distribution

The natural habitat of Santalum spicatum includes the dry woodlands and scrublands of the southwest region of Australia. It prefers well-drained soils and is often found in areas with a mix of soil types, from sandy to loamy. The species has adapted to survive in a climate with low rainfall and high temperatures.

Uses

The heartwood and roots of Santalum spicatum are highly valued for their aromatic oil, which is used in the perfumery industry. The oil contains sesquiterpenes, which are believed to have antimicrobial, anti-inflammatory, and aromatherapy benefits. The wood is also used in the production of incense, cosmetics, and traditional medicines. In addition to its commercial uses, the tree plays a role in land rehabilitation and is used in agroforestry systems to improve soil quality and prevent erosion.

Conservation

Over-harvesting and habitat loss have led to a decline in wild populations of Santalum spicatum. Conservation efforts are focused on sustainable management and cultivation practices to ensure the species' survival. This includes the development of plantation systems that mimic natural ecosystems, allowing for the sustainable production of sandalwood oil without depleting wild populations.

Cultivation

Cultivation of Santalum spicatum requires the presence of host plants for successful growth. It is propagated from seeds, which are sown in the presence of suitable host species. The trees begin to produce a significant amount of heartwood, and thus oil, after approximately 15 to 20 years of growth. Cultivation practices aim to balance the ecological needs of the species with commercial production goals.

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Santalum spicatum

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  Sandalwood harvest

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  Sandalwood export 1905