Grevillea rara

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Grevillea rara
Grevillea rara.jpg
In Kings Park, Perth
Status DECF R.svg
Declared rare  (DEC)
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Grevillea
Species:
G. rara
Binomial name
Grevillea rara

Grevillea rara, also known as the rare grevillea, [2] is a species of flowering plant in the family Proteaceae and is endemic to a restricted part of the South West region of Western Australia. It is a prostrate, sprawling shrub when young, later a dense, prickly shrub with pinnatisect leaves with linear lobes, and clusters of white to pale pink flowers.

Contents

Description

Grevillea rara is a prostrate, sprawling shrub when young, later a dense, spreading, prickly shrub up to 2 m (6 ft 7 in) high and 1 m (3 ft 3 in) wide with woolly-hairy branchlets. The leaves are 15–25 mm (0.59–0.98 in) long, up to 15 mm (0.59 in) wide and pinnatisect with 3 to 5 lobes that are sometimes divided again, the end lobes linear 4–20 mm (0.16–0.79 in) long and 0.3–0.8 mm (0.012–0.031 in) wide. The edges of the leaf lobes are rolled under, obscuring the lower surface. The flowers are arranged in more or less spherical to dome-shaped clusters on a woolly-hairy rachis, and are white, sometimes tinged with pink, the pistil 25–27 mm (0.98–1.06 in) long. Flowering occurs from August to November and the fruit is an oblong follicle. [2] [3] [4] [5]

The species is closely related to Grevillea curviloba , with slight differences such as fine hairs on the branchlets and inflorescence stems and narrow leaf lobes. [2]

Taxonomy

Grevillea rara was first formally described in 1993 by Peter Olde and Neil Marriott in the journal Nuytsia from specimens collected north of Collie in 1986. [5] [6] The specific epithet (rara) means "rare", referring to the conservation status of the species. [5]

Distribution and habitat

Rare grevillea is found amongst tall shrubs or medium trees in shrubland and jarrah forest in a small area north of Collie. It grows in lateritic, gravelly, sandy or clay soils. [3] Associated species include Eucalyptus marginata , Corymbia calophylla , Banksia grandis , Hakea lasiantha , Xanthorrhoea preissii , Acacia pulchella , and Acacia drummondii . [2]

Conservation status

Initially. G. rara was known from two populations, one of which was flooded by the construction of the Harris River Dam in 1990. [7] In 1997, six populations of the species, comprising 1,515 individual plants were known. [2] Rare grevillea is listed as "Threatened" by the Western Australian Government Department of Biodiversity, Conservation and Attractions, [3] meaning that it is in danger of extinction. [8] The main threats to the species are road and firebreak maintenance, weed invasion and inappropriate fire regimes. [2]

See also

Related Research Articles

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<i>Grevillea curviloba</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea curviloba is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a prostrate to erect shrub with short branchlets, divided leaves with linear to narrowly lance-shaped lobes with the narrower end towards the base, and white to cream-coloured flowers.

<i>Grevillea bipinnatifida</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea bipinnatifida, commonly known as fuchsia grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a spreading shrub, usually with bipinnatifid leaves and loose clusters of dull pink to crimson flowers.

<i>Grevillea annulifera</i> Species of shrub in the family Proteaceae endemic to Western Australia

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<i>Grevillea bedggoodiana</i> Species of shrub in the family Proteaceae endemic to Victoria, Australia

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<i>Grevillea acropogon</i> Species of shrub in the family Proteaceae endemic to the south-west of Western Australia

Grevillea acropogon is a species of flowering plant in the family Proteaceae and is endemic to a restricted part of southwestern Western Australia. It is a prostrate to erect shrub with pinnatisect leaves with five to seven sharply-pointed lobes, and red flowers.

<i>Grevillea plurijuga</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea plurijuga is a species of flowering plant in the family Proteaceae and is endemic to southern Western Australia. It is a prostrate to low-lying or dense mounded to erect shrub with divided leaves with linear lobes and loose clusters of hairy, red or pink flowers.

<i>Grevillea dryandroides</i> Species of shrub in the family Proteaceae native to Western Australia

Grevillea dryandroides, commonly known as phalanx grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. A diffuse, clumping shrub, it often forms suckers and has divided leaves with up to 35 pairs of leaflets, and groups of red to pinkish flowers on an unusually long, trailing peduncle.

<i>Grevillea althoferorum</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea althoferorum, commonly known as the split-leaved grevillea, is a species of flowering plant in the family Proteaceae and is endemic to a restricted area of Western Australia. It is a compact, rounded shrub with sharply-pointed, deeply lobed leaves and dull yellow flowers with a creamy-yellow style.

<i>Grevillea insignis</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea insignis, commonly known as wax grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is an erect, bushy shrub with more or less oblong leaves with seven to seventeen sharply-pointed, triangular teeth, and more or less spherical or cylindrical clusters of cream-coloured flowers ageing to pink.

<i>Grevillea amplexans</i> Species of shrub in the family Proteaceae endemic to the Mid West region of Western Australia

Grevillea amplexans is a species of flowering plant in the family Proteaceae and is endemic to the Mid West region of Western Australia. It is a spreading shrub with arching branches, stem-clasping, sharply-pointed, lobed or toothed leaves and white to cream-coloured flowers.

<i>Grevillea calliantha</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea calliantha, commonly known as Foote's grevillea, Cataby grevillea or black magic grevillea, is a species of flowering plant in the family Proteaceae and is endemic to a restricted part of the south-west of Western Australia. It is a spreading, compact shrub with pinnatipartite leaves with linear lobes, and pale yellow to apricot-coloured flowers with a maroon-black to reddish style.

<i>Grevillea coccinea</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea coccinea is a species of flowering plant in the family Proteaceae and is endemic to the south of Western Australia. It is a low-lying or sprawling shrub with narrowly wedge-shaped to linear leaves and white, cream-coloured, and red or yellow flowers.

Grevillea crowleyae is a species of flowering plant in the family Proteaceae and is endemic to a restricted area in the south-west of Western Australia. It is a dense, spreading shrub with deeply divided leaves usually with three to seven linear lobes, and grey, pale yellowish or greenish flowers with a maroon-black style.

<i>Grevillea hislopii</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea hislopii is a species of flowering plant in the family Proteaceae and is endemic to a restricted area of the south-west of Western Australia. It is a dense, single-stemmed shrub with linear to narrow elliptic leaves and clusters of hairy, whitish-grey flowers.

Grevillea nivea is a species of flowering plant in the family Proteaceae and is endemic to the south of Western Australia. It is a dense shrub with spreading to ascending branches, crowded, divided leaves, the end lobes linear, and dense clusters of red flowers.

<i>Grevillea patentiloba</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea patentiloba is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a prostrate to erect, spreading to straggling shrub with divided leaves, and down-turned clusters of red to deep pink and cream-coloured to bright yellow flowers with a red to deep pink style.

Grevillea prominens is a species of flowering plant in the family Proteaceae and is endemic to a restricted part of the South West region of Western Australia. It is a shrub with divided leaves, the end-lobes linear to narrow triangular, and creamy-white flowers usually projected beyond the foliage.

<i>Grevillea prostrata</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea prostrata, commonly known as the Pallarup grevillea, is a species of flowering plant in the family Proteaceae and is endemic to a small area in the southwest of Western Australia. It is a prostrate shrub with more or less pinnatisect leaves and pink and white flowers with a white style.

<i>Grevillea pyramidalis</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea pyramidalis, commonly known as the caustic bush, is a species of flowering plant in the family Proteaceae and is endemic to north-western Australia. It is an erect, spindly shrub or small tree with simple linear or pinnatisect leaves with linear to narrowly egg-shaped lobes, and white to yellow or cream-coloured flowers.

References

  1. "Grevillea rara". Australian Plant Census. Retrieved 25 November 2022.
  2. 1 2 3 4 5 6 "National recovery plan for the Rare Grevillea (Grevillea rara)". Department of the Environment. 2016. Retrieved 24 August 2016.
  3. 1 2 3 "Grevillea rara". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  4. "Grevillea rara". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 25 November 2022.
  5. 1 2 3 Olde, Peter M.; Marriott, Neil R. (1993). "New species and taxonomic changes in Grevillea (Proteaceae: Grevilleoideae) from south-west Western Australia". Nuytsia. 9 (2): 244–246. Retrieved 25 November 2022.
  6. "Grevillea rara". APNI. Retrieved 25 November 2022.
  7. "Harris River Dam". Government of Western Australia, Heritage Council. Retrieved 25 November 2022.
  8. "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 25 November 2022.