Acacia acutata

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Acacia acutata
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Caesalpinioideae
Clade: Mimosoid clade
Genus: Acacia
Species:
A. acutata
Binomial name
Acacia acutata
Acacia acutataDistMap16.png
Occurrence data from AVH
Synonyms [1]
  • Racosperma acutatum(W.Fitzg.) Pedley
  • Acacia costataauct. non Benth.: Bentham, G., Flora Australiensis

Acacia acutata is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is an inticately branched, often compact shrub with spiny branchlets, sharply pointed, triangular to trowel-shaped phyllodes, flowers arranged in spherical heads of 11 to 15 flowers, and firmly papery pods, rounded over the seeds.

Contents

Description

Acacia acutata is an intricately branched, glabrous, often compact shrub that typically grows to a height of 30–60 cm (12–24 in) and has rigid, spiny branchlets. The phyllodes are triangular to trowel-shaped, 4–12 mm (0.16–0.47 in) long and 0.8–2.0 mm (0.031–0.079 in) wide and sharply pointed, with a prominent midvein. Thee are stipules at the base of the phyllodes, but that fall off as the phyllodes mature. The flowers are borne in spherical heads on a peduncle 2–4 mm (0.079–0.157 in) long, each head with 11 to 15 golden flowers with thin bracteoles at the base, but fall off as the flowers develop. Flowering occurs from August to October and the pod is firmly papery, up to 22 mm (0.87 in) long and 2.5–3.5 mm (0.098–0.138 in) wide and prominently rounded over the seeds. The seeds are oblong to elliptic, about 2.5 mm (0.098 in)long. [2] [3] [4]

Taxonomy

Acacia acutata was first formally described in 1904 by William Vincent Fitzgerald in the Journal of the West Australian Natural History Society from specimens he collected near Cunderdin in 1903. [5] [6] The specific epithet (acutata) means "forming a sharp angle", referring to the phyllodes. [7]

This species is included in the subgenus Phyllodineae. [8]

Distribution

This species of wattle mainly occurs between Wongan Hills, Ongerup and Lake King where it is found among granite outcrops and sandplains growing in gravelly sandy, loamy or clay soils. [3] [4] It grows in woodland, mallee, or heathland in the Avon Wheatbelt, Coolgardie and Mallee bioregions of south-western Western Australia. [2] [4]

See also

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References

  1. 1 2 "Acacia acutata". Australian Plant Census. Retrieved 2 May 2024.
  2. 1 2 "Acacia acutata". World Wide Wattle. Western Australian Herbarium . Retrieved 25 May 2019.
  3. 1 2 "Acacia acutata". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  4. 1 2 3 "Acacia acutata". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 2 May 2024.
  5. ↑ "Acacia acutata". APNI. Retrieved 2 May 2024.
  6. ↑ Fitzgerald, William V. (1904). "Additions to the West Australian Flora". Journal of the West Australian Natural History Society. 2 (1): 6–7. Retrieved 2 May 2024.
  7. ↑ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 127. ISBN   9780958034180.
  8. ↑ "Acacia acutata". World Wide Wattle. Retrieved 1 May 2024.
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