Grevillea halmaturina

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Grevillea halmaturina
Grevillea halmaturina.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Grevillea
Species:
G. halmaturina
Binomial name
Grevillea halmaturina
Subspecies
  • G. halmaturinaTate subsp. halmaturina
  • G. halmaturina subsp. laevisMakinson
Synonyms [2]
  • Grevillea parviflora var. acuaria F.Muell. ex Benth.
  • Hakea halmaturinaF.Muell. nom. inval., nom. nud.

Grevillea halmaturina is a species of flowering plant in the family Proteaceae and is endemic to South Australia. It is a prickly, spreading to erect shrub with sharply-pointed, linear to more or less-cylindrical leaves and large groups of white to pale pink flowers.

Contents

Description

Grevillea halmaturina is a prickly, spreading to erect shrub that typically grows to a height of 0.3–1.5 m (1 ft 0 in – 4 ft 11 in) and has ridged branchlets. Its leaves are sharply-pointed linear to more or less cylindrical or tapering, 10–30 mm (0.39–1.18 in) long and 0.8–1.2 mm (0.031–0.047 in) wide with the edges rolled under, enclosing most of the lower surface. The flowers are white to pale pink and are arranged in large, sessile groups on the ends of branches or in leaf axils, the pistil 6–8.5 mm (0.24–0.33 in) long. Flowering occurs from July to November and the fruit is a smooth, narrowly oval follicle 10–14 mm (0.39–0.55 in) long. [3]

Taxonomy

Grevillea halmaturina was first formally described in 1890 by Ralph Tate in his book A Handbook of the Flora of Extratropical South Australia. [4] [5] The specific epithet (halmaturina) is derived from Halmaturus, a name once applied to a genus of kangaroos, and commonly used for species from Kangaroo Island. [6]

In 2000, Robert Owen Makinson described two subspecies of G. halmaturina in the Flora of Australia and the names are accepted by the Australian Plant Census:

Distribution and habitat

Both subspecies mostly grow in shrubby woodland, often in moister places. Subspecies halmaturina is endemic to Kangaroo Island and subspecies laevis is endemic to the southern part of the Eyre Peninsula. [8] [10]

Conservation status

Grevillea halmaturina is listed as Vulnerable on the IUCN Red List of Threatened Species. Much of its distribution has been cleared for agriculture, leaving it with a severely fragmented population and an estimated extent of occurrence of 14,393 km². There is a continuing decline in both the number of mature individuals and the quality of habitat due to land clearing for agriculture. There are currently no conservation measures in place for this species, however, it is known to occur within protected areas, including national parks such as Flinders Chase National Park. [1]

Related Research Articles

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<i>Grevillea rhyolitica</i> Species of shrub in the family Proteaceae endemic to New South Wales, Australia

Grevillea rhyolitica, commonly known as Deua grevillea or Deua flame, is a species of flowering plant in the family Proteaceae and is endemic to south-eastern New South Wales. It is a more or less erect shrub with elliptic leaves and hairy red flowers.

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

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

Grevillea tripartita is species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is an erect, prickly shrub with divided leaves with 3 lobes, and clusters of red and cream-coloured or reddish-orange and yellow flowers.

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<i>Grevillea oxyantha</i> Species of shrub in the family Proteaceae endemic to New South Wales, Australia

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Grevillea nematophylla, commonly known as water bush or silver-leaved water bush, is a species of flowering plant in the family Proteaceae and is endemic to Australia. It is shrub or small tree with simple or pinnatisect leaves, the leaves or lobes linear, and branched, cylindrical clusters of cream-coloured flowers.

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

Grevillea humilis is a species of flowering plant in the family Proteaceae and is endemic to eastern New South Wales. It is an erect to spreading shrub with narrowly elliptic to more or less linear leaves, and pink or white flowers.

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

Grevillea commutata is a species of flowering plant in the family Proteaceae and is endemic to the west of Western Australia. It is a spreading, open to dense shrub with egg-shaped leaves with the narrower end towards the base, and white, cream-coloured, and pinkish-green flowers.

<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. 1 2 Makinson, R. (2020). "Grevillea halmaturina". IUCN Red List of Threatened Species . 2020: e.T113020030A113308071. doi: 10.2305/IUCN.UK.2020-2.RLTS.T113020030A113308071.en . Retrieved 10 January 2024.
  2. 1 2 "Grevillea halmaturorum". Australian Plant Census. Retrieved 5 May 2022.
  3. "Grevillea halmaturina". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 5 May 2022.
  4. "Grevillea halmaturina". APNI. Retrieved 5 May 2022.
  5. Tate, Ralph (1890). A Handbook of the Flora of Extratropical South Australia. Adelaide: Education Department. p. 83. Retrieved 5 May 2022.
  6. McCarthy, Patrick M.; Kantvilas, Gintaras (2013). "Psoroglaena halmaturina sp. nov. (lichenised Ascomycota, Verrucariaceae) from Kangaroo Island, South Australia". Journal of the Adelaide Botanic Gardens. 26: 4.
  7. "Grevillea halmaturorum subsp. halmaturina". Australian Plant Census. Retrieved 5 May 2022.
  8. 1 2 "Grevillea halmaturina subsp. halmaturina". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 5 May 2022.
  9. "Grevillea halmaturorum subsp. laevis". Australian Plant Census. Retrieved 5 May 2022.
  10. 1 2 "Grevillea halmaturina subsp. laevis". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 5 May 2022.