Eucalyptus wimmerensis

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Wimmera mallee box
Eucalyptus wimmerensis flowers.jpg
Flowers of Eucalyptus wimmerensis
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Eucalyptus
Species:
E. wimmerensis
Binomial name
Eucalyptus wimmerensis
Fruit Eucalyptus wimmerensis fruit.jpg
Fruit

Eucalyptus wimmerensis, commonly known as the Wimmera mallee box or the broad-leaved green mallee, [2] is a species of mallee that is endemic to an area around the border between Victoria and South Australia. It usually has smooth bark on the trunk and branches, linear to narrow oblong leaves, flower buds in groups of seven to eleven, white flowers and cup-shaped to barrel-shaped fruit.

Contents

Description

Eucalyptus wimmerensis is a multi-stemmed and often erect mallee that typically grows to height of 4 m (13 ft) rarely to 12 m (39 ft) but never a tree. It has smooth grey, tan or cream-coloured bark, sometimes with fibrous bark near the base. Young plants have dull bluish to greyish green, linear to narrow lance-shaped or narrow oblong leaves that are about 65 mm (2.6 in) long and 16 mm (0.63 in) wide. Adult leaves are the same shade of glossy green on both sides, linear to narrow lance-shaped, narrow oblong or curved, up to 50–80 mm (2.0–3.1 in) long and 8–15 mm (0.31–0.59 in) wide on a petiole up to 13 mm (0.51 in) long. The flower buds are arranged in leaf axils in groups of seven to eleven on a peduncle up to 5–13 mm (0.20–0.51 in) long, the individual buds on pedicels 4–6 mm (0.16–0.24 in) long. Mature buds are spindle-shaped to club-shaped, 5–6 mm (0.20–0.24 in) long and 3–4 mm (0.12–0.16 in) wide with a rounded to bluntly cone-shaped operculum that is shorter than the floral cup. Flowering occurs from summer to late autumn and the flowers are white. The fruit is a woody cup-shaped to barrel-shaped capsule about 6 mm (0.24 in) long and wide with the valves below rim level. [3] [4] [5] [6]

Taxonomy and naming

Eucalyptus wimmerensis was first formally described in 1990 by Kevin James Rule in the journal Muelleria from specimens collected in 1964 by James Hamlyn Willis on the Lawloit Range between Nhill and Kaniva. [4] [7] The specific epithet (wimmerensis) refers to the Wimmera region of Victoria where this species occurs. [4]

In 2018, Rule described five subspecies, but the names have not been accepted by the Australian Plant Census: [8]

Distribution and habitat

The Wimmera mallee box has a scattered distribution in the Little Desert National Park and adjacent area of South Australia. It is most common between Dimboola and Nhill and between Nhill and Kaniva, where it grows in sandy soils or gravelly loams in mallee vegetation or mixed mallee woodland. [3] As with some other Eucalypts, it occurs in lands cleared for agriculture. As a result it is difficult to relate its distribution to the natural state. Some stands of E. wimmerensis include hybrids, even with the distantly related mallees of the E. dumosa group. [5]

See also

Related Research Articles

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<i>Eucalyptus foecunda</i> Species of eucalyptus

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

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<i>Eucalyptus calycogona</i> Species of plant in Australia

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

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

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

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

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Eucalyptus forresterae, commonly known as brumby sallee, is a species of "whipstick" mallee that is endemic to a restricted area in Victoria. It has smooth greenish to whitish bark, glossy green, lance-shaped to narrow egg-shaped adult leaves, flower buds in groups of between eleven and twenty one, white flowers and conical or shortened hemispherical fruit.

Eucalyptus silvestris is a species of mallee or small tree that is endemic to Victoria, Australia. It has rough, fibrous or flaky bark on the trunk and larger branches, smooth greyish brown bark above, glossy green, lance-shaped leaves, flower buds usually in groups of seven, white flowers and conical to cup-shaped fruit.

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

Eucalyptus socialis subsp. eucentrica, commonly known as the inland red mallee, is a subspecies of mallee that is endemic to 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.

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

Eucalyptus socialis subsp. socialis, commonly known as the summer red mallee, is a subspecies of mallee that is endemic to inland 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 white 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 wimmerensis". Australian Plant Census. Retrieved 22 January 2020.
  2. ↑ Dean Nicolle. "Native Eucalypts of South Australia" . Retrieved 15 October 2016.
  3. 1 2 "Eucalyptus wimmerensis (Myrtaceae) Wimmera Mallee Box". Seeds of South Australia. Retrieved 21 January 2020.
  4. 1 2 3 Rule, Kevin James (1990). "Eucalyptus wimmerensis, a new species of eucalyptus (Myrtaceae) from Victoria and South Australia" (PDF). Muelleria. 7 (2): 193–201. Archived from the original (PDF) on 9 April 2020. Retrieved 22 January 2020.
  5. 1 2 Brooker, M. Ian H.; Slee, Andrew V. "Eucalyptus wimmerensis". Royal Botanic Gardens Victoria. Retrieved 22 January 2020.
  6. ↑ Nicolle, Dean (2013). Native Eucalypts of South Australia. Adelaide: Dean Nicolle. pp. 188–189. ISBN   9780646904108.
  7. ↑ "Eucalyptus wimmerensis". APNI. Retrieved 22 January 2020.
  8. ↑ Rule, Kevin James (2018). "Eucalyptus wimmerensis" (PDF). Muelleria. 37: 43–54. Retrieved 22 January 2020.
  9. ↑ "Eucalyptus wimmerensis subsp. arapilensis". APNI. Retrieved 22 January 2020.
  10. ↑ "Eucalyptus wimmerensis subsp. grata". APNI. Retrieved 22 January 2020.
  11. ↑ "Eucalyptus wimmerensis subsp. pallida". APNI. Retrieved 22 January 2020.
  12. ↑ "Eucalyptus wimmerensis subsp. parviformis". APNI. Retrieved 22 January 2020.
  13. ↑ "Eucalyptus wimmerensis subsp. wimmerensis". APNI. Retrieved 22 January 2020.
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