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Xanthophyllum octandrum
Macintyre's boxwood is a slow-growing rainforest tree from northeastern Queensland and nearby Papua New Guinea that can reach about 30 m and live for thousands of years. It is grown mainly as a specimen or conservation tree in warm, humid, frost-free gardens, as it is not a typical houseplant.
Xanthophyllum octandrum, commonly known as Macintyre's boxwood, false jitta, yellow boxwood or sovereignwood, is a slow-growing tree in the milkwort family Polygalaceae which has the potential to reach thousands of years of age. It is endemic to coastal northeastern Queensland, Australia.
Macintyre's boxwood grows in well developed rainforest on various soils (but is more common on those derived from grantite), and is found at altitudes from sea level up to 1,600 m (5,200 ft).
Extracts of the bark of Xanthophyllum octandrum have shown strong cytotoxic activity, and thus a potential use in pharmacology.
Xanthophyllum adenotus var. arsatii · Xanthophyllum adenotus · Xanthophyllum amoenum · Xanthophyllum beccarianum · Xanthophyllum bicolor · Xanthophyllum borneense · Xanthophyllum brachystachyum · Xanthophyllum brevipes · Xanthophyllum bullatum · Xanthophyllum ceraceifolium · Xanthophyllum clovis · Xanthophyllum contractum
Text excerpted from the Wikipedia article Xanthophyllum octandrum 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.
