Eremophila clarkei

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Turpentine bush
Eremophila granitica leaves, sepals, fruits.JPG
Eremophila clarkei leaves and flowers
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Scrophulariaceae
Genus: Eremophila
Species:
E. clarkei
Binomial name
Eremophila clarkei
Synonyms [1]

Eremophila clarkei, commonly known as turpentine bush, is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Western Australia, South Australia and the Northern Territory. It is a shrub which is variable in form, but usually with narrow leaves and white or pale pink flowers. It is similar to Eremophila georgei and Eremophila granitica .

Contents

Description

Eremophila clarkei is an erect shrub growing to a height of between 0.6 m (2 ft) and 4 m (10 ft) wide with branches that are flattened near their tip, glabrous and very sticky due to the presence of resin. The leaves are dark green, widely spaced and arranged alternately along the stems, linear to narrow elliptic in shape and mostly 16–45 mm (0.6–2 in) long and 3–6.5 mm (0.1–0.3 in) wide. The leaf margins may be smooth, wavy or toothed. [2] [3] [4] [5]

The flowers are borne singly in leaf axils on an s-shaped, flattened stalk which is 15–27 mm (0.6–1 in) long. There are 5 linear, green to purple sepals differing slightly in length, 10–15.5 mm (0.4–0.6 in) long and lance-shaped. The petals are 20–40 mm (0.8–2 in) long and joined at their lower end to form a tube. The petal tube is white, pink, mauve or purple. The outside of the tube and petal lobes are hairy while the inner surface of the lobes is glabrous and the inside of the tube is filled with woolly hairs. The lowest petal lobe covers the opening of the petal tube. Flowering occurs from March to October and is followed by fruits which are dry, woody oval to cone-shaped and 5.5–9 mm (0.2–0.4 in) long. [2] [3] [4]

E. clarkei growing near Perenjori Eremophila granitica habit.JPG
E. clarkei growing near Perenjori
E. clarkei flower detail Eremophila granitica flower.JPG
E. clarkei flower detail

Taxonomy and naming

Eremophila clarkei was first formally described by Augustus Frederick Oldfield and Ferdinand von Mueller in 1859 and the description was published in Fragmenta phytographiae Australiae . The type specimen was collected by Oldfield "near the mouth of the Murchison River". [6] [7] The specific epithet (clarkei) honours William Clark, a patron of botanical collecting who supported the expedition during which the type collection was made. [2] [3] [7]

Distribution

Turpentine bush is widespread and common in the Eremaean and South-West botanical provinces in Western Australia where it grows in sand or clay soils. [3] [8] It is also found in the extreme south west of the Northern Territory where it is classified as "near threatened" [9] and in South Australia. Its occurrence in that state was first recorded in 1977. [10]

Conservation status

Eremophila clarkei is classified as "not threatened' by the Government of Western Australia Department of Parks and Wildlife. [8]

Use in horticulture

Turpentine bush is drought hardy and moderately frost hardy. It is most easily propagated by grafting onto Myoporum species and grows well in a wide range of soils but dos best in a sunny situation. [5] [11]

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<i>Eremophila strongylophylla</i> Species of flowering plant

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<i>Eremophila weldii</i> Species of plant

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<i>Eremophila hughesii</i> Species of flowering plant

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<i>Eremophila christophori</i> Species of flowering plant

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<i>Eremophila densifolia</i> Species of flowering plant

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<i>Eremophila drummondii</i> Species of flowering plant

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<i>Eremophila exilifolia</i> Species of flowering plant

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<i>Eremophila gibsonii</i> Species of plant

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<i>Eremophila gilesii</i> Species of plant

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<i>Eremophila psilocalyx</i> Species of flowering plant

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<i>Eremophila rotundifolia</i> Species of plant

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<i>Eremophila willsii</i> Species of plant

Eremophila willsii is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Australia. It is an erect shrub with bright green, often serrated leaves and pinkish to deep pinkish-purple petals. It is mainly found in Western Australia, the Northern Territory and South Australia in deep sand.

References

  1. 1 2 "Eremophila clarkei". Australian Plant Census. Retrieved 9 April 2020.
  2. 1 2 3 Chinnock, R.J. (Bob) (2007). Eremophila and allied genera : a monograph of the plant family Myoporaceae (1st ed.). Dural, NSW: Rosenberg. pp. 357–360. ISBN   9781877058165.
  3. 1 2 3 4 Brown, Andrew; Buirchell, Bevan (2011). A field guide to the eremophilas of Western Australia (1st ed.). Hamilton Hill, W.A.: Simon Nevill Publications. p. 60. ISBN   9780980348156.
  4. 1 2 Corrick, Margaret G.; Fuhrer, Bruce A. (2009). Wildflowers of southern Western Australia (3rd ed.). Kenthurst, N.S.W.: Rosenberg Pub. p. 108. ISBN   9781877058844.
  5. 1 2 "Eremophila clarkei". Goldfields Revegetation. Retrieved 30 December 2015.
  6. ↑ "Eremophila clarkei". APNI. Retrieved 30 December 2015.
  7. 1 2 von Mueller, Ferdinand (1859). Fragmenta Phytographiae Australiae (Volume 1, Number 9). Melbourne. p. 208. Retrieved 30 December 2015.
  8. 1 2 "Eremophila clarkei". FloraBase . Western Australian Government Department of Parks and Wildlife.
  9. ↑ "Eremophila clarkei". Northern Territory Government; floraNT. Retrieved 25 December 2016.
  10. ↑ Chinnock, Robert J. (1977). "Notes on Eremophila R.Br. (Myoporaceae) in South Australia". Journal of the Adelaide Botanic Gardens. 1 (2): 123–126.
  11. ↑ Boschen, Norma; Goods, Maree; Wait, Russell (2008). Australia's eremophilas : changing gardens for a changing climate. Melbourne: Bloomings Books. pp. 75–76. ISBN   9781876473655.
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