Leptospermum scoparium

Leptospermum scoparium, commonly called mānuka (Māori pronunciation: [maːnʉka]), mānuka myrtle, New Zealand teatree, broom tea-tree, or just tea tree, is a species of flowering plant in the myrtle family Myrtaceae, native to New Zealand (including the Chatham Islands) and south-east Australia. Its nectar produces Mānuka honey. Mānuka is a prolific shrub-type tree and is often one of the first species to regenerate on cleared land. It is typically a shrub growing to 2–5 m (7–16 ft) tall, but can grow into a moderately sized tree, up to 15 m (49 ft) or so in height. It is evergreen, with dense branching and small leaves 7–20 mm (0.28–0.79 in) long and 2–6 mm (0.079–0.24 in) broad, with a short spine tip. The flowers are white, occasionally pink, 8–15 mm (0.31–0.59 in) – rarely up to 25 mm (0.98 in) – in diameter, with five petals. The wood is tough and hard. Mānuka is often confused with the related species kānuka (Kunzea ericoides) – the easiest way to tell the difference between the two species in the field is to feel their foliage – mānuka leaves are prickly, while kānuka leaves are soft. Alternatively, the seed capsules of mānuka are large (5–7 mm or 0.20–0.28 inches in diameter) and often remain on the plant year round, whereas the seed capsules of kānuka are much smaller (2.2–4.6 mm or 0.087–0.18 inches in diameter) and are not present for much of the year. The Latin specific epithet scoparium means "like broom", referring to Northern Hemisphere genera such as Genista and Cytisus which it superficially resembles, but to which it is only distantly related. Evidence suggests that L. scoparium originated in Australia before the onset of the Miocene aridity, and moved as a result of long-distance dispersal events to New Zealand from eastern Australia sometime during the last 20 million years. Cyclones and other wind activity are most likely responsible for transporting seeds long distances. Supporters of this claim cite evidence that the genus Leptospermum arose under conditions where frequent forest fires w...