Eucalyptus burdettiana

Eucalyptus burdettiana, commonly known as Burdett gum or Burdett's mallee,[3] is a species of flowering plant in the family Myrtaceae and is endemic to Western Australia. It is a mallee or shrub with smooth bark, lance-shaped adult leaves, flower buds with an elongated horn-shaped operculum, greenish-yellow flowers and cup-shaped or bell-shaped fruit.

Flower buds
Flowers
Fruit

Burdett gum
Eucalyptus burdettiana in the Fitzgerald River National Park
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Eucalyptus
Species:
E. burdettiana
Binomial name
Eucalyptus burdettiana

Description

Eucalyptus burdettiana is a mallee or shrub that typically grows to a height of 1–4 m (3 ft 3 in – 13 ft 1 in), forms a lignotuber and has smooth, brownish and dark orange bark. Young plants and coppice regrowth have triangular to egg-shaped leaves arranged alternately along the branches, 35–80 mm (1.4–3.1 in) long and 25–60 mm (1–2 in) wide and always have a petiole. Adult leaves are lance-shaped, 65–95 mm (2.6–3.7 in) long, 25–60 mm (1–2 in) wide on a petiole 7–17 mm (0.28–0.67 in) long and are the same glossy green on both sides. The flower buds are arranged in groups of seven, nine or eleven on a flattened, often downturned peduncle 25–50 mm (0.98–2.0 in) long. The individual buds are sessile. The mature buds are cylindrical, 20–58 mm (0.79–2.3 in) long and 4–13 mm (0.16–0.51 in) wide with the operculum three to four times as long as the floral cup. The fruit is a woody, cup-shaped to bell-shaped capsule 19–27 mm (0.75–1.1 in) long and 20–25 mm (0.79–0.98 in) wide on a spreading or downturned peduncle.[3][4][5][6]

Taxonomy and naming

Eucalyptus burdettiana was first formally described by William Blakely and Henry Steedman in 1939 and the description was published in Contributions from the New South Wales National Herbarium from specimens collected by Steedman on stony outcrops of Mount Barren near Hopetoun in 1938.[7] The specific epithet (burdettiana) honours William Burdett (1871-1940) who was a friend of Henry Steedman.[5]

Distribution and habitat

Burdett gum is found on quartzite ridges and rocky areas of the Barren Range in the Fitzgerald River National Park where it grows in sandy soils.[4] The only remaining population is composed of 140 plants split into five sub-populations.[3]

Conservation

This eucalypt is classified as "endangered" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999 and as "Threatened Flora (Declared Rare Flora — Extant)" by the Department of Environment and Conservation (Western Australia). The main threat to the species is inappropriate fire regimes.[3][4]

See also

References
  1. Fensham, R., Laffineur, B. & Collingwood, T. 2019. Eucalyptus burdettiana. The IUCN Red List of Threatened Species 2019: e.T133374958A133374960. https://dx.doi.org/10.2305/IUCN.UK.2019-3.RLTS.T133374958A133374960.en. Downloaded on 20 September 2021.
  2. "Eucalyptus burdettiana". Australian Plant Census. Retrieved 30 March 2019.
  3. "Approved Conservation Advice for Eucalyptus burdettiana (Burdett Gum)" (PDF). Department of the Environment and Energy. Retrieved 22 July 2017.
  4. "Eucalyptus burdettiana". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  5. "Eucalyptus burdettiana Burdett's mallee". Euclid: Centra for Australian National Biodiversity Research. Retrieved 30 March 2019.
  6. Chippendale, George M. "Eucalyptus burdettiana". Australian Biological Resources Study, Department of the Environment and Energy, Canberra. Retrieved 30 March 2019.
  7. "Eucalyptus burdettiana". APNI. Retrieved 30 March 2019.
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