Eucalyptus porosa

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Mallee box
Eucalyptus porosa.jpg
Eucalyptus porosa on Mount Wudinna, Eyre Peninsula
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Eucalyptus
Species:
E. porosa
Binomial name
Eucalyptus porosa
flower buds, flowers and fruit Eucalyptus porosa buds.jpg
flower buds, flowers and fruit

Eucalyptus porosa, commonly known as mallee box, Quorn mallee or water mallee, [2] is a species of mallee or a tree that is endemic to southern Australia. It has rough, fibrous or flaky bark on the trunk and larger branches, smooth greyish bark above, lance-shaped adult leaves, flower buds in groups of seven, white flowers and barrel-shaped or shortened spherical fruit.

Contents

Description

Eucalyptus porosa is a mallee that typically grows to a height of 5 m (16 ft), or a tree to 12–14 m (39–46 ft), and forms a lignotuber. It has rough, fibrous or flaky, greyish bark on the trunk or stems, smooth whitish or grey bark above. Young plant and coppice regrowth have egg-shaped to lance-shaped leaves that are 55–90 mm (2.2–3.5 in) long and 12–22 mm (0.47–0.87 in) wide. Adult leaves are the same shade of glossy green on both sides, lance-shaped, 50–120 mm (2.0–4.7 in) long and 8–23 mm (0.31–0.91 in) wide, tapering to a petiole 5–18 mm (0.20–0.71 in) long. The flower buds are arranged in leaf axils in groups of seven on an unbranched peduncle 2–12 mm (0.079–0.472 in) long, the individual buds on pedicels up to 7 mm (0.28 in) long. Mature buds are oval, 4–7 mm (0.16–0.28 in) long and 3–4 mm (0.12–0.16 in) wide with a conical to rounded or slightly beaked operculum. Flowering mainly occurs between October and March and the flowers are white. The fruit is a woody, barrel-shaped or shortened spherical capsule 4–7 mm (0.16–0.28 in) long and 4–8 mm (0.16–0.31 in) wide with the valves near rim level. [2] [3] [4] [5] [6] [7]

Taxonomy and naming

Eucalyptus porosa was first formally described in 1856 by Friedrich Miquel from an unpublished description by Ferdinand von Mueller. Miquel's description was published in the journal Nederlandsch Kruidkundig Archief. [8] [9] The specific epithet (porosa) is from the Latin porosus meaning "pierced with small holes", referring to small holes in the anthers. [2]

Distribution and habitat

Mallee box is widely distributed in the semi-arid regions of South Australia, north-western Victoria and south-western New South Wales. It grows in a variety of habitats including rocky ridges, coastal limestone, mallee shrubland and woodland. [2] [6] [7]

See also

Related Research Articles

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<i>Eucalyptus yalatensis</i> Species of plant

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<i>Eucalyptus socialis <span style="font-style:normal;">subsp.</span> victoriensis</i> Subspecies of plant

Eucalyptus socialis subsp. victoriensis, commonly known as the red mallee, is a subspecies of mallee that is endemic to southern inland Australia. It usually has rough bark on the base of the trunk, smooth bark above, lance-shaped adult leaves, flower buds in groups of between seven and eleven, pale creamy yellow flowers and barrel-shaped to urn-shaped or spherical fruit.

Eucalyptus socialis subsp. viridans, commonly known as the green-leaved red mallee, is a subspecies of mallee that is endemic to south-eastern Australia. It usually has rough bark on the base of the trunk, smooth bark above, lance-shaped adult leaves, flower buds in groups of between seven and eleven, pale creamy yellow flowers and barrel-shaped to urn-shaped or spherical fruit.

References

  1. ↑ "Eucalyptus porosa". Australian Plant Census. Retrieved 5 December 2019.
  2. 1 2 3 4 Nicolle, Dean (2013). Native Eucalypts of South Australia. Adelaide: Dean Nicolle. pp. 192–193.
  3. ↑ "Eucalyptus porosa". Euclid: Centre for Australian National Biodiversity Research. Retrieved 30 May 2020.
  4. ↑ Chippendale, George M. "Eucalyptus porosa". Australian Biological Resources Study, Department of the Environment and Energy, Canberra. Retrieved 5 December 2019.
  5. ↑ "Eucalyptus porosa". South Australian Seed Conservation Service. Retrieved 5 December 2019.
  6. 1 2 Brooker, M. Ian H.; Slee, Andrew V. "Eucalyptus porosa". Royal Botanic Gardens Victoria. Retrieved 5 December 2019.
  7. 1 2 Hill, Ken. "Eucalyptus porosa". Royal Botanic Garden Sydney. Retrieved 5 December 2019.
  8. ↑ "Eucalyptus porosa". APNI. Retrieved 5 December 2019.
  9. ↑ Miquel, Friedrich A.W. (1856). "Stirpes Novo-Hollandas a Ferd. Mullero collectas determinavit". Nederlandsch Kruidkundig Archief. 4 (1): 132–133. Retrieved 5 December 2019.
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