Eucalyptus roycei

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Shark Bay mallee
Eucalyptus roycei.jpg
Eucalyptus roycei in Kings Park
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Eucalyptus
Species:
E. roycei
Binomial name
Eucalyptus roycei

Eucalyptus roycei, commonly known as Shark Bay mallee, [2] is a species of mallee or a small tree that is endemic to a small area along the Gascoyne coast of Western Australia. It has rough fibrous or flaky bark on the lower trunk, smooth greyish bark above, lance-shaped to curved adult leaves, flower buds in groups of seven or nine, cream-coloured or pale yellow flowers and cylindrical to barrel-shaped, four-sided fruit.

Contents

Description

Eucalyptus roycei is a mallee or a small tree that typically that grows to a height of 2–6 m (6 ft 7 in – 19 ft 8 in) and forms a lignotuber. It has rough fibrous or flaky greyish bark at the base, smooth greyish to cream-coloured bark above. Young plants and coppice regrowth have egg-shaped to lance-shaped leaves that are 60–125 mm (2.4–4.9 in) long and 30–60 mm (1.2–2.4 in) wide. Adult leaves are the same shade of dull greyish green on both sides, lance-shaped to curved, 65–140 mm (2.6–5.5 in) long and 18–30 mm (0.71–1.18 in) wide, tapering to a petiole 10–30 mm (0.39–1.18 in) long. The flower buds are arranged in leaf axils in groups of seven or nine on an unbranched peduncle 9–28 mm (0.35–1.10 in) long, the individual buds on pedicels 2–6 mm (0.079–0.236 in) long. Mature buds are cylindrical to oval, 14–21 mm (0.55–0.83 in) long and 8–11 mm (0.31–0.43 in) wide with a conical to rounded operculum and a four-sided floral cup. Flowering occurs between January and March and the flowers are white, cream-coloured or pale yellow. The fruit is a woody, cylindrical to barrel-shaped, four-sided capsule 15–30 mm (0.59–1.18 in) long wide with the valves below the level of the rim. [2] [3] [4]

Taxonomy

Eucalyptus roycei was first formally described in 1970 by Maisie Carr, Denis Carr and Alex George in Proceedings of the Royal Society of Victoria . The type specimen was collected near Hamelin Pool in 1966 by Eleanor Marion Scrymgeour and Maisie Carr. [5] [6] [7] The specific epithet (roycei) honours Robert Dunlop Royce who was a member of the staff of the Western Australian Herbarium. [6]

Distribution

Shark Bay mallee is found on sand plains in the Gascoyne region centred around Shark Bay where it grows in red calcareous sandy soils. [2] The mallee is part of the tree heath community found in Shark Bay at the overlap of the South West botanical province and the Eremaean botanical province. Associated species include Eucalyptus beardiana , Grevillea rogersoniana , Acacia drepanophylla , Banksia ashbyi and Grevillea rogersoniana . [8]

Use in horticulture

The plant is fast-growing and is wind-, drought- and frost-tolerant. It is usually grown in a full-sun position in well-drained soils. Although it is not regarded as a very attractive tree, it is available commercially for bush or park settings. [9]

See also

Related Research Articles

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

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

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

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

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

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

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

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<i>Corymbia chippendalei</i> Species of plant

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Corymbia hamersleyana is a species of small tree or mallee that is endemic to the Pilbara region of Western Australia. It has rough, flaky bark on part or all of the trunk, smooth cream-coloured bark above, lance-shaped adult leaves, flowers buds in groups of seven or nine, creamy white flowers and urn-shaped fruit.

<i>Eucalyptus ceratocorys</i> Species of grass

Eucalyptus ceratocorys, also known as the horn-capped mallee, is a mallee that is native to South Australia and Western Australia. It has rough, ribbony bark at the base of its trunk, smooth greyish bark above, lance-shaped adult leaves, flower buds in groups of seven or nine with ridges along the sides, white to cream-coloured flowers and cylindrical fruit.

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

Eucalyptus cylindrocarpa, commonly known as the woodline mallee, is a species of mallee that is endemic to Western Australia. It has mostly smooth bark, sometimes with loose fibrous or flaky bark near the base of the trunk, linear to lance-shaped or curved adult leaves, flower buds in groups of seven, nine or eleven and cylindrical to barrel-shaped fruit.

Eucalyptus capitanea, commonly known as the desert ridge-fruited mallee, is a species of mallee that is endemic to South Australia. It often has rough, flaky bark on the lower part of the trunk, smooth bark above, lance-shaped adult leaves, ribbed, oval flower buds in groups of seven, cream-coloured flowers and ribbed, urn-shaped 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.

References

  1. "Eucalyptus roycei". Australian Plant Census. Retrieved 16 December 2019.
  2. 1 2 3 "Eucalyptus roycei". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  3. "Eucalyptus roycei". Euclid: Centre for Australian National Biodiversity Research. Retrieved 29 May 2020.
  4. Chippendale, George M. "Eucalyptus roycei". Australian Biological Resources Study, Department of the Environment and Energy, Canberra. Retrieved 16 December 2019.
  5. "Eucalyptus roycei". APNI. Retrieved 16 December 2019.
  6. 1 2 Carr, S.G. Maisie; Carr, Denis J.; George, Alex S. (1969). "A new eucalypts from Western Australia". Proceedings of the Royal Society of Victoria. 83 (2): 159–169. Retrieved 16 December 2019.
  7. "Scrymgeour, Eleanor Marion (1942 - ) [Bennett, Eleanor Marion]". Council of Heads of Australasian Herbaria Australian National Herbarium. Retrieved 16 December 2019.
  8. "Plants of Shark Bay". Department of Parks and Wildlife. Retrieved 30 October 2017.
  9. "Eucalyptus roycei". Plant Finder. GardensOnline Shopping Pty. Ltd. Retrieved 30 October 2017.