Myoporum insulare

Common Boobialla
Myoporum insulare at Black Rock, Victoria
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Lamiales
Family: Scrophulariaceae
Genus: Myoporum
Species: M. insulare
Binomial name
Myoporum insulare
R.Br.[1]
Synonyms[2]
  • Bertolonia glandulosa Spin
  • Myoporum adscendens R.Br.
  • Myoporum glandulosum (Spin) Spin
  • Myoporum mucronulatum A.DC.
  • Myoporum serratum var. glandulosum (Spin) Benth.
  • Myoporum serratum var. obovatum Benth.
  • Myoporum tasmanicum A.DC.
  • Myoporum tetrandrum var. adscendens (R.Br.)
  • Myoporum tetrandrum var. glandulosum (Spin) Domin

Myoporum insulare, commonly known as common boobialla, native juniper or blueberry tree[1] is a flowering plant in the figwort family Scrophulariaceae and is endemic to coastal areas of Australia. It is a shrub or small tree which grows on dunes and coastal cliffs, is very salt tolerant and widely used in horticulture.

Description

Boobialla varies in form from a prostrate shrub to a small, erect tree growing to a height of 6 metres (20 ft). It has thick, smooth green leaves which are 30–90 millimetres (1–4 in) long and 7–22 millimetres (0.3–0.9 in) wide with edges that are either untoothed or toothed toward the apex. The leaves are egg-shaped and the upper and lower surfaces are the same dull green colour.[2][3][4]

White flowers with purple spots appear in the leaf axils in clusters of 3 to 8 and are 6–8 millimetres (0.2–0.3 in) in diameter. There are 5 glabrous, smooth sepals and the tube formed by the petals is 2.3–3.6 millimetres (0.09–0.1 in) long with the lobes of the tube about the same length. The four stamens usually extend slightly beyond the tube. Peak flowering times are July to February in Western Australia and October to December in south-eastern Australia. Flowering is followed by the fruit which is a smooth, rounded purple to black drupe 4.5–9 millimetres (0.2–0.4 in) in diameter.[2][3][4][5]

Taxonomy and naming

Myoporum insulare was first formally described by botanist Robert Brown in Prodromus Florae Novae Hollandiae in 1810.[1][6] The specific epithet insulare is a Latin word meaning (from an) "island".[7]

Distribution and habitat

Myoporum insulare occurs in coastal areas of New South Wales, Victoria, South Australia, Western Australia and Tasmania.[2] In New South Wales it occurs from Eden southward, although an isolated occurrence was recorded much further north on Brush Island.[5] It is also found on Lord Howe Island.[5][8] In Victoria it is found in coastal areas but also inland in the west of that state.[9] Boobialla is common along the coast of South Australia[10] and in Western Australia it occurs south from Shark Bay to the South Australian border.[11] It grows in sandy soils, often between rocks or near sandstone.[5][11]

Use in horticulture

Myoporum insulare may be used as a fast-growing hedge or windbreak species which withstands coastal winds and drought.[12] It is hardy in well drained positions and is easily propagated from cuttings.[13] It is also used as rootstock for propagating many Eremophila species.[14]

References

  1. 1 2 3 "Myoporum insulare". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
  2. 1 2 3 4 Chinnock, Robert J. (2007). Eremophila and allied genera : a monograph of the plant family Myoporaceae (1st ed.). Dural, NSW: Rosenberg. pp. 108–110. ISBN 9781877058165.
  3. 1 2 Costermans, L. (1981). Native Trees and Shrubs of South-eastern Australia. Australia: Rigby. ISBN 072701403X.
  4. 1 2 Marron, Michele. "Myoporum insulare". Australian National Botanic Garden. Retrieved 23 November 2015.
  5. 1 2 3 4 Chinnock, Robert. "Myoporum insulare". Royal Botanic Gardens Sydney, Plantnet. Retrieved 23 November 2015.
  6. ↑ Brown, Robert (1810). Prodromus Florae Novae Hollandiae. London: Typis R Taylor, veneunt apud J. Johnson. p. 516. Retrieved 23 November 2015.
  7. ↑ "insularis". Wiktionary. Retrieved 23 November 2015.
  8. ↑ "Appendices Lord Howe Island Biodiversity Management Plan" (PDF). Department of Environment and Climate Change (NSW). Retrieved 23 November 2015.
  9. ↑ "Common boobialla". Victorian Resources Online. Retrieved 23 November 2015.
  10. ↑ "Myoporum insulare". Electronic Flora of South Australia Fact Sheet. State Herbarium of South Australia. Retrieved 2008-05-29.
  11. 1 2 "Myoporum insulare". FloraBase. Department of Environment and Conservation, Government of Western Australia.
  12. ↑ Cochrane, G.R., Fuhrer, B.A., Rotherdam, E.M., Simmons, J.& M. and Willis, J.H. (1980). Flowers and Plants of Victoria and Tasmania. A.H. & A.W. Reed. ISBN 0-589-50256-5.
  13. ↑ Wrigley, John W.; Fagg, Murray (1983). Australian native plants : a manual for their propagation, cultivation and use in landscaping (2nd ed.). Sydney: Collins. pp. 271–272. ISBN 0002165759.
  14. ↑ Boschen, Norma; Goods, Maree; Wait, Russell (2008). Australia's eremophilas : changing gardens for a changing climate. Melbourne: Bloomings Books. pp. 23–24. ISBN 9781876473655.
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