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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids II
Ordo: Myrtales

Familia: Myrtaceae
Subfamilia: Myrtoideae
Tribus: Eucalypteae
Genus: Eucalyptus
Subgenus: E. subg. Symphyomyrtus
Sectio: E. sect. Maidenaria
Subsectio: E. subsect. Euryotae
Series: E. ser. Globulares
Species: Eucalyptus malacoxylon

Eucalyptus malacoxylon Blakely

Eucalyptus malacoxylon, commonly known as Moonbi apple box[2] or apple box,[3] is a species of small to medium-sized tree that is endemic to a restricted area of New South Wales. It has rough, fibrous or flaky bark on the trunk and larger branches, smooth bark on the thinnest branches, lance-shaped adult leaves, flower buds in groups of seven, white flowers and cup-shaped, conical or hemispherical fruit.


Eucalyptus malacoxylon is a tree that typically grows to a height of 15–20 m (49–66 ft) and forms a lignotuber. It has rough, gray, fibrous or flaky bark on the trunk and larger branches, smooth dull grey bark on branches thinner than 50–80 mm (2.0–3.1 in). Young plants and coppice regrowth have heart-shaped or egg-shaped leaves that are 40–70 mm (1.6–2.8 in) long and 30–70 mm (1.2–2.8 in) wide. Adult leaves are lance-shaped to curved, the same glossy green on both sides, 90–300 mm (3.5–11.8 in) long and 20–40 mm (0.79–1.57 in) wide, tapering to a petiole 20–50 mm (0.79–1.97 in) long. The flower buds are arranged in leaf axils on an unbranched peduncle 10–17 mm (0.39–0.67 in) long, the individual buds on pedicels 2–6 mm (0.079–0.236 in) long. Mature buds are glaucous, diamond-shaped, about 6 mm (0.24 in) long and 5 mm (0.20 in) wide with a conical operculum. The flowers are white and the fruit is a woody, cup-shaped, conical or hemispherical capsule 4–7 mm (0.16–0.28 in) long and 7–10 mm (0.28–0.39 in) wide with the valves near the level of the rim or protruding above it.[2][3][4]
Taxonomy and naming

Eucalyptus malacoxylon was first formally described in 1934 by William Blakely who published the description in his book A Key to the Eucalypts.[5] The specific epithet (malacoxylon) is derived from the ancient Greek words malakos meaning "soft"[6]: 508  and xylon meaning "wood".[6]: 864 
Distribution and habitat

Moonbi apple box grows in open woodland on sloping ground in soils derived from granite. It only occurs from an area between Bendemeer, Nundle and Niangala at the southern end of the Northern Tablelands.[3][2][4]

"Eucalyptus malacoxylon". Australian Plant Census. Retrieved 23 September 2019.
"Eucalyptus malacoxylon". Euclid: Centre for Australian National Biodiversity Research. Retrieved 23 September 2019.
K.Hill. "New South Wales Flora Online: Eucalyptus malacoxylon". Royal Botanic Gardens & Domain Trust, Sydney, Australia.
Chippendale, George M. "Eucalyptus malacoxylon". Australian Biological Resources Study, Department of the Environment and Energy, Canberra. Retrieved 23 September 2019.
"Eucalyptus malacoxylon". APNI. Retrieved 23 September 2019.
Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press.

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