Macadamia jansenii

Macadamia jansenii is an endangered and poisonous tree in the flowering plant family Proteaceae, native to Queensland in Australia. It was only described as a new species in 1991, being first brought to the attention of plant scientists in 1983 by Ray Jansen, a sugarcane farmer and amateur botanist from South Kolan in Central Queensland. Closely related to the cultivated and recently domesticated macadamia nut, it has small 11–16 mm diameter nuts that have a smooth, hard, brown shell enclosing a cream, globulose kernel that is bitter and inedible. In the wild it grows as a multi-stemmed 6–9 m (20–30 ft) tall evergreen tree, with leaves having entire margins and generally in whorls of 3. An extremely rare species, it was discovered as a single population of around 60 plants in the wild in Eastern Australia. In 2018 about 60 new mature Macadamia jansenii trees were located, although a quarter of these were destroyed in the bush fires of 2019. Sequencing of the genome was carried out, as......read more on Wikipedia.