The Macadamia Nut is a medium-sized tree which can grow to approximately 20 m in height with a similar crown width, giving the tree a rounded shape. The leaves are simple, narrow-elliptical to narrow-oblong in shape, tough, dark green and occur on branchlets in groups of three. Leaves are 10-15 cm long. Juvenile leaves have a serrated edge but mature leaves have a smooth margin. The flowers are cream or creamy-white in colour and occur on racemes up to 30 cm long. The racemes originate at the leaf axil. The fruit are a hard brown nut encased in a green leathery outer shell with a 2-3 cm diameter. The smooth brown nut contains an edible kernel.
Macadamia Nut |
Status: Vulnerable on the EPBC Act list
Government evidence of impact of climate change:
Australian Government, Conservation Advice, Macadamia integrifolia
The distribution of this species overlaps with the following EPBC Act listed threatened ecological communities Threats Macadamia Nut is threatened by urban clearing; agricultural clearing; weed invasion and inappropriate fire regimes (Queensland CRA RFA Steering Committee; 1997).
Weeds such as Lantana (Lantana camara) and Camphor Laurel (Cinnamomum camphora) dominate habitat and change fire regimes.