About Macadamia integrifolia Maiden & Betche
Nomenclature and Common Name
Macadamia integrifolia Maiden & Betche, commonly known as smooth-shell macadamia, is a tree species that reaches up to 15 metres (49 ft) in height.
Leaf Characteristics
Its leaves are simple, oblong, glossy, with entire wavy margins; they grow to 20 centimetres (8 in) long and 10 centimetres (3.9 in) wide.
Flower and Fruit Traits
It produces white or pink flowers, which develop into woody, edible, rounded fruits 2–3.5 cm (0.8–1.4 in) in diameter.
Native Distribution
This species is native to rainforests of southeast Queensland and the extreme adjacent northern region of New South Wales, Australia.
Introduced Range
It has been introduced to Mexico, where it grows successfully in the states of Michoacán and Jalisco.
Hardiness Zones
The trees can survive in USDA hardiness zones 10 and 11.
Pathogen Susceptibility
In its native Australia, trees of this species can be infected by fungal pathogens from the genera Neopestalotiopsis and Pestalotiopsis, both members of the Sporocadaceae family; these pathogens cause flower blight.
Ornamental Use
Macadamia integrifolia is only rarely cultivated for ornamental purposes.
