Macadamia integrifolia

{{short description|Species of flowering plant in the family Proteaceae}}

{{speciesbox

|image = Macadamia integrifolia inflorescences 74 Sunbury St Geebung L1060475.jpg

|image_caption = Inflorenscences and foliages of Macadamia integrifolia at Geebung, Queensland

|image2 = Starr-081111-0455-Macadamia integrifolia-different stages-Makawao-Maui (24299912723).jpg

|image2_caption = Different stages of Macadamia integrifolia nut

|status = VU

|status_system = IUCN3.1

|status_ref ={{cite iucn |author=Forster, P. |author2=Griffith, S. |author3=Ford, A. |author4=Benwell, A. |date=2020 |title=Macadamia integrifolia |volume=2020 |page=e.T113180064A113310165 |doi=10.2305/IUCN.UK.2020-3.RLTS.T113180064A113310165.en |access-date=18 November 2021}}

|genus = Macadamia

|species = integrifolia

|authority = Maiden & Betche

}}

Macadamia integrifolia is a small to medium-sized tree native to Australian rainforests. Common names include macadamia, smooth-shelled macadamia, bush nut, Queensland nut, Bauple nut and nut oak.{{cite web|url=https://www.environment.gov.au/cgi-bin/sprat/public/publicspecies.pl?taxon_id=7326|title=Species Profile and Threats Database: Macadamia integrifolia|author=Department of the Environment|date=2020|publisher= Department of the Environment, Canberra}}

Description

Macadamia integrifolia trees grow to {{Convert|15|m}} in height.

The leaves are simple, oblong in shape, glossy, entire with wavy leaf margins and are {{Convert|20|cm|frac=2}} long and 10 cm wide.{{Cite web|title=Australian Native Plants Society (Australia)|url=http://anpsa.org.au/m-int.html}} The flowers are white or pink followed by woody, edible rounded fruits{{cite book|last1=Hargreaves|first1=Dorothy|last2=Hargreaves|first2=Bob|title=Tropical Trees of Hawaii|year=1964|publisher=Hargreaves|location=Kailua, Hawaii|page=40}} which are 2 to 3.5 cm in diameter.

Distribution and habitat

It is native to rainforests in southeast Queensland and extreme adjacent northern New South Wales, Australia.

It has been introduced to Mexico and has done well in the states of Michoacán and Jalisco.Marisela Taboada & Rogelio Oliver Guadarrama. 2004. Cultivos alternativos en México. Universidad Autónoma del Estado de Morelos. Centro de Investigaciones Biológicas. AGT Editor S.A. Mexico City, Mexico. {{ISBN|968-463-120-0}}

The trees will survive in hardiness zones 10 and 11.{{citation needed|date=May 2020}}

Ecology

The trees in Australia can be affected by fungal pathogens from the Neopestalotiopsis genus and the Pestalotiopsis genus (both of the Sporocadaceae family); they both cause flower blight.{{cite journal |last1=Prasannath |first1=Kandeeparoopan |last2=Shivas |first2=Roger G. |last3=Galea |first3=Victor J. |last4=Akinsanmi |first4=Olufemi A. |title=Neopestalotiopsis Species Associated with Flower Diseases of Macadamia integrifolia in Australia |journal=J Fungi (Basel) |date=17 September 2021 |volume=7 |issue=9 |page=771 |doi=10.3390/jof7090771|pmid=34575809 |doi-access=free |pmc=8471233 }}{{cite journal |last1=Akinsanmi |first1=O.A. |last2=Nisa |first2=S. |last3=Jeffego |first3=O.S. |last4=Drenth |first4=A. |title=Multiple Pestalotiopsis and Neopestalotiopsis species cause flower blight of macadamia in Australia. |journal=Phytopathology |date=2016 |volume=106 |issue=12 |pages=122‑122}}