Brachychiton discolor

Brachychiton discolor RBG Sydney

Brachychiton discolor, commonly known as the Lacebark or Pink Kurrajong, is a species of tree in the Malvaceae family, native to eastern Australia. It is renowned for its striking floral display and its adaptability to a variety of garden and landscape settings. This article provides an overview of its characteristics, cultivation, and uses in horticulture.

Description

Brachychiton discolor is a medium-sized tree that can reach heights of up to 30 meters in its natural habitat but is usually smaller in garden settings. It has a distinctive trunk with a bottle-shaped appearance in mature specimens, which serves as a water storage mechanism during dry periods. The leaves are large, up to 20 cm long, and lobed, resembling a maple leaf in shape. They are glossy green on top with a softer, hairy underside, which gives the tree its common name, Lacebark, due to the delicate, lace-like appearance of the foliage.

The tree is perhaps best known for its spectacular flowers. Blooming in late spring to early summer, Brachychiton discolor produces clusters of bell-shaped flowers that are predominantly pink, with a contrasting red or purple throat. These flowers are followed by large, boat-shaped seed pods that contain several large, winged seeds.

Habitat and Distribution

Brachychiton discolor is endemic to the subtropical regions of eastern Australia, where it is found in rainforest margins and open forests. It prefers well-drained soils but can adapt to a range of soil types, from sandy soils to clay. The species is tolerant of light frosts and can be found at elevations from sea level to 1000 meters.

Cultivation

The Pink Kurrajong is widely cultivated for its ornamental value. It is suitable for large gardens and public parks, where its shade and aesthetic appeal can be fully appreciated. The tree is relatively low-maintenance once established, requiring minimal watering and fertilization. It is propagated from seed, which should be sown in spring or summer. Germination can be erratic, so it is recommended to sow seeds generously.

Brachychiton discolor is also used in agroforestry for its ability to provide shade and shelter to crops and livestock. Its adaptability to different soil types and conditions makes it a valuable species for land rehabilitation and erosion control projects.

Uses

In addition to its ornamental and environmental uses, Brachychiton discolor has several practical applications. The soft, fibrous bark has been used by Indigenous Australians for making nets, bags, and other items. The seeds are edible when roasted and have been consumed as a food source. However, they should be treated with caution as they can be toxic if not prepared correctly.

Conservation

While Brachychiton discolor is not currently listed as endangered, its natural habitat is under threat from land clearing and development. Conservation efforts are focused on preserving its habitat and promoting its cultivation in gardens and landscapes to ensure its survival.

See Also

• Malvaceae
• Agroforestry
• Horticulture
• Conservation biology