Euphorbia norfolkiana, also known as the Norfolk Island euphorbia, is a flowering plant in the spurge family. It is endemic to the Australian external territory of Norfolk Island in the south-west Pacific Ocean. It was originally described in 1862 by Swiss botanist Pierre Edmond Boissier.
Description The species grows as a dense, low shrub – usually up to 1 m, but sometimes to 3 m in height. It has olive-green flowers.
Distribution and habitat The plants occur in coastal pine and white oak forest, usually below pines in light shade, with coastal cliff vegetation. The species was formerly more common; its conservation status has been assessed as Critically Endangered, and it is threatened by cattle grazing and competition with invasive weeds.
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