Macadamia tetraphylla

Macadamia tetraphylla is a species of evergreen tree native to Australia, belonging to the genus Macadamia. This genus is known for its four species of trees that produce edible seeds, commonly called macadamia nuts. These nuts are a popular confection, often roasted and salted, and are a good source of calcium, phosphorus, iron, and vitamin B, containing a high fat content.1

The trees typically grow to about 18 meters (60 feet) in height and have leathery leaves. The seeds are round, about 25 mm (1 inch) in diameter, and enclosed in a thick husk. While M. tetraphylla is one of the main species cultivated commercially, it tends to hybridize with Macadamia integrifolia. Macadamia cultivation requires rich, well-drained soil and significant rainfall, and the nuts are harvested after they fall to the ground.1