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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. Bisectae
Series: E. ser. Accedentes
Species: Eucalyptus zopherophloia

Eucalyptus zopherophloia Brooker & Hopper
Vernacular names
English: Blackbutt Malleee

Eucalyptus zopherophloia, commonly known as the blackbutt mallee,[3] is a species of spreading mallee that is endemic to an area on the west coast of Western Australia. It has rough bark over part or all of the trunk, smooth grey bark above, narrow lance-shaped leaves, flower buds in groups of nine or eleven, creamy white flowers and conical fruit.


Eucalyptus zopherophloia is a spreading mallee that typically grows to a height of 2.5–6 m (8 ft 2 in – 19 ft 8 in) and forms a lignotuber. It has rough, fibrous bark over part or all of the trunks, smooth grey bark above. The adult leaves are arranged alternately, the same shade of dull to slightly glossy light green on both sides, narrow lance-shaped to narrow elliptical, 45–103 mm (1.8–4.1 in) long and 5–13 mm (0.20–0.51 in) wide, tapering to a petiole 5–17 mm (0.20–0.67 in) long. The flower buds are arranged in leaf axils in groups of nine or eleven on an unbranched peduncle 4–15 mm (0.16–0.59 in) long, the individual buds on pedicels 1–4 mm (0.039–0.157 in) long. Mature buds are oval, 7–10 mm (0.28–0.39 in) long and 4–5 mm (0.16–0.20 in) wide with a rounded operculum. Flowering occurs between October and January and the flowers are creamy white. The fruit is a woody conical capsule 6–10 mm (0.24–0.39 in) long and 6–9 mm (0.24–0.35 in) wide with the valves near rim level.[3][4][5]
Taxonomy and naming

Eucalyptus zopherophloia was first formally described by the botanists Ian Brooker and Stephen Hopper in 1993 in the journal Nuytsia from specimens collected by Brooker in 1986 at an area north of Coolimba.[5][6] The specific epithet (zopherophloia) is from ancient Greek words meaning "dusky" and "bark".[5]
Distribution and habitat

Blackbutt mallee is found in coastal areas between Jurien Bay and Zuytdorp Cliffs where it grows in grey or white sand with limestone rubble.[4][5]
Conservation status

This eucalypt is classified as "Priority Four" by the Government of Western Australia Department of Parks and Wildlife,[3] meaning that is rare or near threatened.[7]
See also

List of Eucalyptus species


Fensham, R., Laffineur, B. & Collingwood, T. 2019. Eucalyptus zopherophloia. The IUCN Red List of Threatened Species 2019: e.T133378975A133378977. https://dx.doi.org/10.2305/IUCN.UK.2019-3.RLTS.T133378975A133378977.en. Downloaded on 20 September 2021.
"Eucalyptus zopherophloia". Australian Plant Census. Retrieved 25 January 2020.
"Eucalyptus zopherophloia". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
"Eucalyptus zopherophloia". Euclid: Centre for Australian National Biodiversity Research. Retrieved 27 May 2020.
Brooker, M. Ian H.; Hopper, Stephen (1993). "New series, subseries, species and subspecies of Eucalyptus (Myrtaceae) from Western Australia and from South Australia". Nuytsia. 9 (1): 10–12. Retrieved 25 January 2020.
"Eucalyptus zopherophloia". APNI. Retrieved 25 January 2020.
"Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 25 January 2020.

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