Eucalyptus peninsularis

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Cummins mallee
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. peninsularis
Binomial name
Eucalyptus peninsularis

Eucalyptus peninsularis, commonly known as Cummins mallee, [3] is a species of mallee that is endemic to a small area of South Australia. It has smooth, greyish or brownish bark, lance-shaped adult leaves, flower buds in groups of between seven and eleven, pale creamy yellow flowers and urn-shaped fruit.

Contents

Description

Eucalyptus peninsularis is a mallee that typically grows to a height of 6 m (20 ft) and forms a lignotuber. It has smooth, greyish to brownish bark that is shed in ribbons. Young plants and coppice regrowth have sessile, dull green, elliptical to egg-shaped leaves arranged in opposite pairs. Adult leaves are arranged alternately, the same shade of glossy green on both sides, lance-shaped, 70–130 mm (2.8–5.1 in) long and 10–23 mm (0.39–0.91 in) wide, tapering to a petiole 15–25 mm (0.59–0.98 in) long. The flower buds are arranged in leaf axils in groups of seven, nine or eleven on an unbranched peduncle 5–13 mm (0.20–0.51 in) long, the individual buds on pedicels 4–7 mm (0.16–0.28 in) long. Mature buds are 12–17 mm (0.47–0.67 in) long and 4–6 mm (0.16–0.24 in) wide, have a ribbed, urn-shaped floral cup and a beaked to horn-shaped operculum. Flowering has been recorded in December and the flowers are pale creamy yellow. The fruit is a woody, urn-shaped capsule 9–11 mm (0.35–0.43 in) long and 6–9 mm (0.24–0.35 in) wide with the valves sometimes enclosed in the fruit, sometimes protruding strongly. [3] [4] [5]

Taxonomy

Eucalyptus peninsularis was first formally described in 1997 by Dean Nicolle in his book, Eucalypts of South Australia. The type material was collected north-west of Cummins on the road to Mount Hope in 1972. [6] The specific epithet (peninsularis) is from the Latin word peninsula, meaning "a narrow body of land", referring to the distribution on the Eyre Peninsula. [3]

Distribution and habitat

Cummins mallee is restricted to south-central parts of the Eyre Peninsula, especially near the Cummins and Yeelanna areas where it grows in open mallee or woodland. [3] [4]

Conservation status

Eucalyptus peninsularis occurs in a mallee community complex, often with E. dumosa or E. calycogona. That complex has been rated as "poorly conserved in South Australia". Only small parts of that ecosystem have been conserved, including in Hambidge Wilderness Protection Area, the Verran Tanks Conservation Park and the Wharminda Conservation Park. [7] The total area occupied by E. peninsularis prior to colonisation was 4,700 km2 (1,800 sq mi) but has now been reduced to 952 km2 (368 sq mi) and the population is now severely fragmented. The International Union for the Conservation of Nature listed it as a vulnerable species in 2019. [1]

See also

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<i>Eucalyptus socialis <span style="font-style:normal;">subsp.</span> socialis</i> Subspecies 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. 1 2 Fensham, R.; Laffineur, B.; Collingwood, T. (8 March 2019). "Cummins mallee Eucalyptus peninsularis". IUCN Red List of Threatened Species . 2019: e.T137622716A137622720. doi: 10.2305/IUCN.UK.2019-3.RLTS.T137622716A137622720.en . Retrieved 22 June 2023.
  2. ↑ "Eucalyptus peninsularis". Australian Plant Census. Retrieved 28 November 2019.
  3. 1 2 3 4 Nicolle, Dean (2013). Native Eucalypts of South Australia. Adelaide: Dean Nicolle. pp. 82–83.
  4. 1 2 "Eucalyptus peninsularis". Euclid: Centre for Australian National Biodiversity Research. Retrieved 30 May 2020.
  5. ↑ "Eucalyptus peninsularis". South Australian Seed Conservation Service. Retrieved 28 November 2019.
  6. ↑ "Eucalyptus peninsularis". APNI. Retrieved 28 November 2019.
  7. ↑ South Australia. Department for Environment and Heritage (2007), Mallee parks of the central Eyre Peninsula: management plan (PDF), Dept. for Environment and Heritage, pp. 11–15, ISBN   978-1-921238-81-9
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