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Scaly butt mallee
Conservation status
Endangered  (EPBC Act)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Myrtales
Family:	Myrtaceae
Genus:	Eucalyptus
Species:	E. leprophloia
Binomial name
Eucalyptus leprophloia Brooker & Hopper

Eucalyptus leprophloia, commonly known as scaly butt mallee, is a species of mallee that is endemic to a small area in Western Australia. It has rough, fibrous bark on the base of the trunk, smooth bark above, lance-shaped adult leaves, flower buds in groups of seven to eleven, white flowers and cup-shaped to barrel-shaped fruit.

Description

Eucalyptus leprophloia is a mallee that typically grows to a height of 2–5 m (6 ft 7 in – 16 ft 5 in) and forms a lignotuber. It has rough, fibrous, greyish brown bark on the base of the trunks, smooth greyish over pale copper-coloured bark above. Young plants and coppice regrowth have elliptic to egg-shaped leaves that are 50–85 mm (2.0–3.3 in) long, 25–40 mm (0.98–1.57 in) wide and have a petiole. Adult leaves are the same glossy green on both sides, lance-shaped, 70–105 mm (2.8–4.1 in) long and 15–30 mm (0.59–1.18 in) wide on a petiole 10–20 mm (0.39–0.79 in) long. The flower buds are arranged in leaf axils in groups of seven, nine or eleven on a flattened, unbranched peduncle 3–10 mm (0.12–0.39 in) long, the individual buds on pedicels about 3 mm (0.12 in) long. Mature buds are oval, 7–9 mm (0.28–0.35 in) long, about 5 mm (0.20 in) wide with a rounded operculum. Flowering occurs from August to October and the flowers are white. The fruit is a woody, cup-shaped to barrel-shaped capsule 5–6 mm (0.20–0.24 in) long and 6–7 mm (0.24–0.28 in) wide with the valves at rim level.

Taxonomy and naming

Eucalyptus leprophloia was first formally described in 1993 by Ian Brooker and Stephen Hopper from a specimen Hopper collected near Badgingarra in 1986. The description was published in the journal Nuytsia. According to Brooker and Hopper the specific epithet (leprophloia) is derived from "Greek lepros - "scaly" and phloia - "bark". Francis Sharr gives the etymology as from the Greek leprosus meaning "scurfy" and -phloius meaning "-barked". The American Heritage Dictionary of the English Language lists the word leper as derived from the Greek lepros meaning "scaly", in turn, from lepis, lepos meaning "scale". According to A Latin Dictionary of Lewis and Short, leprosus is a Late Latin word meaning "leprous". According to A Greek–English Lexicon, "bark" in ancient Greek is phloios (φλοιός).

Distribution and habitat

Scaly butt mallee is only known from near Badgingarra to the Mount Adams area where it grows in a range of habitats including hill slopes and gentle valleys with powderbark wandoo and coastal blackbutt.

Conservation status

This mallee is listed as "endangered" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999 and an interim recovery plant has been prepared. It is also classified as "Threatened Flora (Declared Rare Flora — Extant)" by the Department of Environment and Conservation (Western Australia). Several populations of the species occur on private property and the main threats to the species relate to farming activities including ploughing, use of fertiliser and herbicide, grazing by livestock and rabbits. Land clearing and inappropriate fire regimes are also a threat.

See also

• List of Eucalyptus species

References

1. "Eucalyptus leprophloia". Australian Plant Census. Retrieved 11 September 2019.
2. ^ "Eucalyptus leprophloia". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
3. "Eucalyptus leprophloia". Euclid: Centre for Australian National Biodiversity Research. Retrieved 11 September 2019.
4. ^ 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): 12–13. Retrieved 11 September 2019.
5. "Eucalyptus leprophloia". APNI. Retrieved 11 September 2019.
6. Francis Aubie Sharr (2019). Western Australian Plant Names and their Meanings. Kardinya, Western Australia: Four Gables Press. p. 238. ISBN 9780958034180.
7. American Heritage Dictionary of the English Language (Fifth (revised) ed.). ISBN 978-0544454453. Retrieved 25 September 2019.
8. Lewis, Charlton Thomas; Short, Charles (1879). A Latin Dictionary Founded on Andrews' Edition of Freund's Latin Dictionary. Oxford: Clarendon Press. p. 1052. Retrieved 25 September 2019.
9. Liddell, H.G. & Scott, R. (1940). A Greek-English Lexicon. Revised and augmented throughout by Sir Henry Stuart Jones with the assistance of Roderick McKenzie.Oxford: Clarendon Press.
10. "Approved Conservation Advice Eucalyptus leprophloia (scaly-butt mallee)" (PDF). Australian Government Department of the Environment. Retrieved 11 September 2019.
11. Stack, Gillian; Broun, Gina. "Scaly-butt mallee (Eucalyptus leprophloia) interim recovery plant 2004-2009" (PDF). Australian Government Department of the Environment. Retrieved 11 September 2019.

• EPBC Act endangered biota
• Rosids of Western Australia
• Eucalyptus
• Myrtales of Australia
• Mallees (habit)
• Plants described in 1993
• Taxa named by Stephen Hopper
• Taxa named by Ian Brooker