Kunzea ericifolia

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Spearwood
Kunzeaericifolia.jpg
Kunzea ericifolia growing near Lake Seppings
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Kunzea
Species:
K. ericifolia
Binomial name
Kunzea ericifolia
habit Kunzea ericifolia habit.jpg
habit
leaves and flowers Kunzea ericifolia leaves and flowers.jpg
leaves and flowers

Kunzea ericifolia, commonly known as spearwood, native tree or yellow kunzea, or as kitja boorn, poorndil or condil by the Noongar people, [1] is an erect woody evergreen shrub that is endemic to Western Australia. It has soft green linear leaves and spherical heads of usually yellow flowers in spring.

Contents

Description

Kunzea ericifolia is a woody erect shrub, often multi-stemmed, [2] that can grow to a height of 6 metres [3] [4] but is typically about 2 metres (7 ft) tall. The long and slender stems divide from the base, and continue to divide into finer, flexible and narrowly angled branches. The shrub has a crown of soft pale green foliage. The leaf are simple in structure with linear form growing to a length of about 10 millimetres (0 in) with a width of 1 millimetre (0 in). Flowering occurs in spring (July to December) and produces small round flower approximately 10 millimetres (0 in) in diameter. The globular blossom is perfumed and yellow, cream or white in color and occurs in clusters and the ends of branches. [5] Flowers are followed by small single celled fruits that contain many small seed that are dispersed once the fruit is ripe. The bark is fibrous, rough and grey in colour, often peeling in layers from the stem.

Taxonomy and naming

Spearwood was first formally described in 1812 by James Edward Smith who gave it the name Metrosideros ericifolia from a specimen collected by Archibald Menzies during the Vancouver expedition's stop at King George Sound in 1791. The description was published in The Cyclopedia edited by Abraham Rees. [6] When he published his description of the genus Kunzea in 1828, Ludwig Reichenbach referred to Kunzea ericifolia but did not validly publish the name. However, in 1840 Gustav Heynhold published the name in Alphabetische und Synonymische Aufzahlung der in den Jahren 1840 bis 1846 in den europäischen Gärten eingeführten Gewächse nebst Angabe ihres Autors. [7] The specific epithet (ericifolia) is a reference to the apparent similarity of the leaves of this species to those of Erica in the family Ericaceae. [3]

Distribution

Kunzea ericifolia is found in the Southwest Australia region. Populations of this species are found as far north as Gingin and as far east as Bremer Bay on the south coast. The largest populations occur around Albany. Many communities are found along the coast-line. [5] A southeastern population is found in the Fitzgerald River National Park. Stands are often found in transition areas between wetlands and drier regions. [3]

The name of the suburb Spearwood in Perth is taken from K. ericifolia. When the developer James Morrison sub-divided the area in 1897 creating the Spearwood Garden Estate it was the first time the name was used. [8]

Ecology

Kunzea ericifolia grows in sandy well drained soil. Found to grow in peaty soils, quartzite and grey sand. Grows well in moist conditions and along the margins of watercourses, lakes and seasonally wet swamps. Can also be found growing amongst rocks in more open and elevated positions. Requires good drainage and a sunny or slightly shaded position. It is ideally suited to mediterranean conditions, can withstand a moderate frost and will grow in more humid conditions.

K. ericifolia is susceptible to bushfire, which will destroy a thicket, however the seedlings can quickly repopulate an area after these events. The stands are often composed of plants of a similar age and size for this reason. The species can form dense thickets and produces large amounts of leaf litter, an environment occupied by a diverse range of orchid species that includes two rare hammer orchids. The stands also provide shelter to fauna, the New Holland honeyeater builds its nests amongst the branches. [3]

Uses

Use in horticulture

The plant has been cultivated for many years as an ornamental plant, though not as commonly as other species of Kunzea. It is easily propagated by seed or by cutting and considered to have greater potential as a garden plant than is currently recognised. [3]

Indigenous use

As the name "spearwood" suggests, the plant was often used to make spears for hunting game. [1]

Other uses

Studies have found that Kunzea ericifolia contains a powerful natural insecticide (called ericfolione) that has been extracted from the plant using hexane. [9] The stems are used in commercial gardens as supports for climbing plants, for fencing and the construction of craypots. These uses have made the species vulnerable to illegal harvesting. [3]

The early colonists used the plant to make a native tea that was considered refreshing but also used as a tonic. More recently it has been used to make bean poles inn market gardens and construct craypots. [1]

Related Research Articles

<i>Kunzea</i> Genus of flowering plants

Kunzea is a genus of plants in the family Myrtaceae and is endemic to Australasia. They are shrubs, sometimes small trees and usually have small, crowded, rather aromatic leaves. The flowers are similar to those of plants in the genus Leptospermum but differ in having stamens that are longer than the petals. Most kunzeas are endemic to Western Australia but a few occur in eastern Australia and a few are found in New Zealand. The taxonomy of the genus is not settled and is complicated by the existence of a number of hybrids.

<i>Banksia ericifolia</i> Woody shrub native to Australia

Banksia ericifolia, the heath-leaved banksia, or lantern banksia, is a species of woody shrub of the family Proteaceae native to Australia. It grows in two separate regions of Central and Northern New South Wales east of the Great Dividing Range. Well known for its orange or red autumn inflorescences, which contrast with its green fine-leaved heath-like foliage, it is a medium to large shrub that can reach 6 m (20 ft) high and wide, though is usually half that size. In exposed heathlands and coastal areas, it is more often 1–2 m (3.3–6.6 ft).

<i>Isopogon anethifolius</i> Shrub in the family Proteaceae

Isopogon anethifolius, commonly known as narrow-leaf drumsticks or narrow-leafed drumsticks, is a shrub in the family Proteaceae. The species is found only in coastal areas near Sydney in New South Wales, and to the immediate west. It occurs naturally in woodland, open forest and heathland on sandstone soils. An upright shrub, it can reach to 3 m (9.8 ft) in height, with terete leaves that are divided and narrow. The yellow flowers appear in the Spring, from September to December, and are prominently displayed. They are followed by round grey cones, which give the plant its common name of drumsticks. The small hairy seeds are found in the old flower parts.

Kunzea glabrescens, commonly known as spearwood, is a flowering plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is a large shrub with leaves and flowers similar to those of K. ericifolia but has differently shaped bracteoles. It is often common in wet areas around Perth.

<i>Verticordia grandis</i> Species of shrub

Verticordia grandis is a large woody shrub that occurs in Southwest Australia. The name grandis, Latin for large, is a reference to its large flowers, leaves, and height. It is well known for its large flowers, which are collected and cultivated, and given the informal name of scarlet featherflower. It was the first species of the family Myrtaceae to have been genetically modified.

<i>Melaleuca viminalis</i> Species of flowering plant

Melaleuca viminalis, commonly known as weeping bottlebrush, or creek bottlebrush is a plant in the myrtle family, Myrtaceae and is endemic to New South Wales, Queensland and Western Australia. It is a multi-trunked, large shrub or tree with hard bark, often pendulous foliage and large numbers of bright red bottlebrush flowers in spring and summer. It is possibly the most commonly cultivated melaleuca in gardens and its cultivars are often grown in many countries.

<i>Darwinia citriodora</i> Species of flowering plant

Darwinia citriodora, commonly known as lemon-scented darwinia or lemon scented myrtle, is a plant in the myrtle family Myrtaceae and is endemic to the south-west of Western Australia. It is a shrub with oblong to lance-shaped leaves and red, yellow and orange flowers over an extended period. It is a hardy plant in well-drained soil, is often cultivated and used as a rootstock for less hardy species.

<i>Astartea fascicularis</i> Species of flowering plant

Astartea fascicularis is a species of flowering plant in the myrtle family, Myrtaceae. It is endemic to southwestern Western Australia, where it is widespread in the Recherche Archipelago and present on the mainland in Cape Le Grand National Park. It is commonly known as Recherche astartea. or false baeckea.

<i>Melaleuca ericifolia</i> Species of tree

Melaleuca ericifolia, commonly known as swamp paperbark, is a plant in the myrtle family, Myrtaceae and the genus Melaleuca, native to south-eastern Australia. It is a rather variable species and some specimens resemble Melaleuca armillaris but its papery bark and smaller, more prolific flower heads distinguish it from that species. It often grows in swampy areas and the draining and clearing of these has reduced the numbers of the species, especially around Port Philip Bay near Melbourne. It is also similar to Melaleuca pustulata, a Tasmanian endemic, but that species only grows in dry heath.

<i>Hakea gibbosa</i> Species of shrub of the family Proteaceae endemic to south eastern Australia

Hakea gibbosa, commonly known as hairy hakea or needlebush hakea, is a shrub of the family Proteaceae, and is endemic to south eastern Australia. It has very prickly foliage, cream-yellowish flowers from April to July, and provides shelter for small birds. It has become an environmental weed in South Africa and New Zealand, where it had been introduced for use as a hedge plant.

<i>Persoonia lanceolata</i> Shrub in the family Proteaceae native to New South Wales in eastern Australia

Persoonia lanceolata, commonly known as lance-leaf geebung, is a shrub native to New South Wales in eastern Australia. It reaches 3 m (10 ft) in height and has smooth grey bark and bright green foliage. Its small yellow flowers grow on racemes and appear in the austral summer and autumn, followed by green fleshy fruits which ripen the following spring. Within the genus Persoonia, P. lanceolata belongs to the lanceolata group of 58 closely related species. It interbreeds with several other species found in its range.

<i>Eremaea pauciflora</i> Species of flowering plant

Eremaea pauciflora is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is a shrub with small leaves and orange flowers at the ends of its branches. It has the most widespread distribution of the eremaeas with considerable variation in its characteristics so that three varieties are recognised. It was the first Eremaea to be described formally but was not originally given the name Eremaea.

<i>Melaleuca nodosa</i> Species of plant

Melaleuca nodosa, commonly known as the prickly-leaved paperbark, is a plant in the myrtle family Myrtaceae, and is endemic to eastern Australia. It is a shrub or small tree with narrow, sometimes needle-like leaves and profuse heads of yellow flowers as early as April or as late as January.

<i>Kunzea muelleri</i> Species of flowering plant

Kunzea muelleri, commonly known as yellow kunzea, is a flowering plant in the myrtle family, Myrtaceae and is endemic to mountainous areas of south-eastern Australia. It is a low-growing, spreading shrub with linear leaves and small groups of pale yellow, stalkless flowers that appear in the summer.

<i>Hakea cucullata</i> Species of in the family Proteaceae and is endemic to the south-west of Western Australia

Hakea cucullata, commonly known as hood-leaved hakea, cup hakea or scallop hakea, is a species of shrub in the family Proteaceae and is endemic to the south-west of Western Australia. An attractive shrub with unusual distinctive foliage and beautiful large pink, red or deep purple scented flowers.

<i>Melaleuca microphylla</i> Species of flowering plant

Melaleuca microphylla is a plant in the myrtle family, Myrtaceae and is endemic to a small area in the south-west of Western Australia. It is a bushy shrub with small, crowded leaves and bears a close resemblance to the commonly cultivated Melaleuca ericifolia of the eastern states.

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

Eremophila gibbosa, commonly known as humped fuchsia bush, is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Western Australia. It is a shrub with broad, shiny, sticky leaves and yellowish-green flowers and which often forms dense thickets.

Kunzea affinis is a flowering plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is a shrub with many branches, small, crowded leaves and pink, five-petalled flowers in early spring.

<i>Kunzea clavata</i> Species of flowering plant

Kunzea clavata, commonly known as the Torbay spearwood, is a flowering plant in the myrtle family, Myrtaceae and is endemic to a small area on the south coast of Western Australia. It is a shrub or tree, typically with many branches and grows to a height of 2.5 to 4 metres. It blooms between September and October producing yellow flowers.

<i>Kunzea spathulata</i> Species of flowering plant

Kunzea spathulata is a species of flowering plant in the myrtle family, Myrtaceae and is endemic to a small area in the south west of Western Australia. It is a tall shrub with erect, much-branched stems, linear leaves and more or less spherical groups of yellow or yellowish green flowers.

References

  1. 1 2 3 "Plants and People in Mooro Country Nyungar Plant Use in Yellagonga Regional Park" (PDF). City of Joondalup. 2011. Retrieved 27 August 2016.
  2. "Five Acre Nursery - Kunzea ericifolia". 2002. Retrieved 2007-10-11.
  3. 1 2 3 4 5 6 Powell, Robert (1990). Leaf and Branch: Trees and Tall Shrubs of Perth. Department of Conservation and Land Management, Perth, Western Australia. ISBN   978-0-7309-3916-0.
  4. "Kunzea ericifolia". 2007. Retrieved 20 February 2020.
  5. 1 2 "Florabase - Kunzea ericifolia". 1999. Retrieved 2007-10-11.
  6. "Metrosideros ericifolia". APNI. Retrieved 4 December 2017.
  7. "Kunzea ericifolia". APNI. Retrieved 4 December 2017.
  8. "Kunzea glabrescens Common name: Spearwood". Friends of Queens Park Bushland. 2011. Retrieved 27 August 2016.
  9. "A New Insecticidal Pyranocyclohexenedione from Kunzea ericifolia". 1999. Retrieved 2007-10-11.