Eremophila tietkensii

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Eremophila tietkensii
Eremophila tietkensii (leaves and flowers).jpg
Eremophila tietkensii 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. tietkensii
Binomial name
Eremophila tietkensii
Synonyms [1]

Eremophila latrobei var. tietkensii(F.Muell. & Tate) Ewart & P.H.Jarrett

Contents

Eremophila tietkensii is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Australia. It is a rounded to flat-topped shrub with grey-green leaves, usually pinkish-purple sepals and mauve, pink or lilac-coloured petals. It is mostly found in Western Australia but also occurs in the far west of the Northern Territory.

Description

Eremophila tietkensii is a rounded or flat-topped shrub which grows to a height of between 0.6 and 2.5 m (2 and 8 ft) with its branches and leaves covered with a layer of fine grey hairs pressed against the surface. The leaves are arranged alternately, well spaced along the branches, grey-green and have a flattened stalk that is 6–12 mm (0.2–0.5 in) long. The leaf blade is lance-shaped to egg-shaped, mostly 30–72 mm (1–3 in) long, 6–17 mm (0.2–0.7 in) wide and has a smooth surface. [2] [3]

The flowers are borne in groups of up to 4 in leaf axils on a hairy stalk which is usually 6.5–14 mm (0.3–0.6 in) long. There are 5 overlapping, elliptic to lance-shaped, green or pinkish-purple sepals which are mostly 7.5–15 mm (0.3–0.6 in) long. Both surfaces of the sepals are hairy, especially around the edges and are usually more hairy on the outer surface. The petals are 22–28 mm (0.9–1 in) long and are joined at their lower end to form a tube. The petal tube is pale lilac to pale mauve or pink on the outside and white with purple spots inside the tube. The outer surface of the petal tube is slightly hairy but the inner surface of the lobes is glabrous while the inside of the tube is filled with long, woolly hairs. The 4 stamens are fully enclosed in the petal tube. Flowering occurs between April and October and the fruit which follow are dry, woody, oval to conical in shape with a distinct point and 6–7 mm (0.2–0.3 in) long. [2] [3]

E. tietkensii growing west of Gascoyne Junction Eremophila tietkensii (habit).jpg
E. tietkensii growing west of Gascoyne Junction

Taxonomy and naming

Eremophila tietkensii was first formally described by Ferdinand von Mueller and Ralph Tate in 1890 from specimens collected on the 1889 expedition of William Tietkens in the Northern Territory. [4] [5] The description was published in Transactions and proceedings and report, Royal Society of South Australia. [6] [7] In 1928, Alfred James Ewart and Phyllis Heather Jarrett considered it to be a variety of Eremophila latrobei , publishing their report in Proceedings of the Royal Society of Victoria [8] but after examining the original specimens and comparing them with those of E. latrobei, Robert Chinnock reverted to the original name. Chinnock's 2007 explanation was published in Journal of the Adelaide Botanic Garden. [9] The specific epithet (tietkensii) honours the explorer Tietkens. [2]

Distribution and habitat

This eremophila is widespread in Western Australia, occurring in inland areas between the Rawlinson and Barlee ranges, growing on rocky slopes, stony clay flats and undulating plains [3] in the Carnarvon, Central Ranges, Gascoyne, Gibson Desert, Great Sandy Desert, Little Sandy Desert, Murchison and Pilbara biogeographic regions. [10] It also occurs in the far south-west of the Northern Territory. [11]

Use in horticulture

In an ideal situation, E. tietkensii is a compact round shrub with grey-green, leathery leaves, masses of pinkish flowers in early spring and coloured sepals which remain after the petals have fallen. It is difficult to propagate from seeds or cuttings but grafts readily onto Myoporum rootstock. It grows best in well-drained soil in a sunny position and is drought tolerant, needing only the occasional watering during a long dry spell, however it is frost sensitive. [12]

Conservation

This species is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife. [10]

Related Research Articles

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Eremophila divaricata, also known as spreading emu bush, is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Australia. It is a shrub with stiff, spreading, tangled branches which are often spiny on their ends, erect leaves and mauve to lilac-coloured flowers.

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

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

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

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

Eremophila strongylophylla is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Western Australia. It is a small shrub with distinctive round leaves, yellowish new growth and purple flowers which are white inside. It is similar to Eremophila mackinlayi and Eremophila hygrophana but distinguished from them by characteristics including leaf shape, and the type of hairs on its leaves and branches.

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

Eremophila dempsteri is a flowering plant in the figwort family, Scrophulariaceae and is endemic to the south of Western Australia. It is an erect shrub with many upright stems, short, hooked leaves and pinkish-purple to white flowers with distinctive woolly sepals.

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

Eremophila flabellata is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Western Australia. It is a small shrub with serrated leaves, broad serrated sepals and pink, purple or mauve flowers.

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

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

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

Eremophila pantonii, commonly known as broombush, is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Western Australia. It is a broom-shaped shrub with narrow leaves which have a hooked tip, and blue or purple, sometimes white flowers in winter and spring.

Eremophila perglandulosa is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Western Australia. It is a low, spreading shrub which has small leaves with many glandular hairs and mauve or purple flowers.

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

Eremophila phyllopoda is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Western Australia. It is an erect or spreading shrub, sometimes round or flat-topped with sticky, hairy leaves and flowers ranging in colour from pink or lilac to purple.

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

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

Eremophila rotundifolia is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Australia. It is a shrub with many tangled branches with its leaves and branches covered with a layer of silvery-grey hairs. Its flowers range in colour from pale to deep lilac. It is common in South Australia and there is also a single record from the Northern Territory.

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

Eremophila santalina is a flowering plant in the figwort family, Scrophulariaceae and is endemic to South Australia. It is an erect, glabrous shrub with thin branches, flexible leaves and white or cream-coloured flowers which sometimes have a slight pinkish-purple tinge.

Eremophila shonae is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Western Australia. It is an erect shrub or a low spreading shrub, depending on subspecies and has very sticky branches and leaves due to the presence of large amounts of resin. The leaves are narrow and the flowers are mauve to purple and white inside with purple spots.

Eremophila succinea is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Western Australia. It is an erect, broom-shaped shrub with sticky, narrow, hooked leaves, narrow, sticky sepals and hairy, pale purple or mauve petals.

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

Eremophila warnesii is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Western Australia. It is an erect, compact shrub with furry leaves, hairy sepals and blue to mauve petals. It is a little-known species, named after the founder of the Eremophila Study Group.

<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 tietkensii". Australian Plant Census. Retrieved 14 May 2019.
  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. 425–427. ISBN   9781877058165.
  3. 1 2 3 Brown, Andrew; Buirchell, Bevan (2011). A field guide to the eremophilas of Western Australia (1st ed.). Hamilton Hill, W.A.: Simon Nevill Publications. p. 275. ISBN   9780980348156.
  4. ↑ Mueller, F.; Tate, R. (1890). "Descriptions of new species". Transactions of the Royal Society of South Australia. 13: 109.
  5. ↑ Brown, H. Y. L.; Mueller, Ferdinand von; Tate, Ralph; Tietkens, William Henry (1891). Journal of the Central Australian Exploring Expedition, 1889, under command of W.H. Tietkens, despatched by the Central Australian Exploring and Prospecting Association, Limited, under the auspices of the Royal Geographical Society of Australasia, South Australian Branch. C.E Bristow, Govt. Printer. p. 81.
  6. ↑ "Eremophila tietkensii". APNI. Retrieved 24 March 2016.
  7. ↑ von Mueller, Ferdinand; Tate, Ralph (1890). "List of Plants collected during Mr. Tietkens' Expedition into Central Australia, 1889". Transactions and Proceedings and Report, Royal Society of South Australia. 13: 109. Retrieved 24 March 2016.
  8. ↑ "Eremophila latrobei var. tietkensii". APNI. Retrieved 24 March 2016.
  9. ↑ Chinnock, Robert J. (2007). "Eremophila tietkensii F.Muell. & Tate (Myoporaceae), a misinterpreted species" (PDF). Journal of the Adelaide Botanic Garden. 21: 1–3. Retrieved 24 March 2016.
  10. 1 2 "Eremophila tietkensii". FloraBase . Western Australian Government Department of Parks and Wildlife.
  11. ↑ "Eremophila tietkensii". Northern Territory Government, eflora online. Retrieved 24 March 2016.
  12. ↑ Boschen, Norma; Goods, Maree; Wait, Russell (2008). Australia's eremophilas : changing gardens for a changing climate. Melbourne: Bloomings Books. pp. 179–180. ISBN   9781876473655.
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