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Macadamia jansenii
Jansen's Macadamia is a rare, endangered evergreen tree from Queensland, Australia, growing 6 to 9 m tall, closely related to the commercial macadamia nut. It is a species that is rarely grown and known mainly from a single wild population.
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.
Macadamia nut · Maroochy Nut · Macadamia nut · Macadamia Nuts
Text excerpted from the Wikipedia article Macadamia jansenii by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
