Acacia acanthoclada

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Harrow wattle
Acacia acanthoclada.jpg
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. acanthoclada
Binomial name
Acacia acanthoclada
Acacia acanthocladaDistMap6.png
Occurrence data from AVH
Synonyms [1]

Racosperma acanthocladum(F.Muell.) Pedley

Habit in the Gluepot Reserve Acacia acanthoclada habit.jpg
Habit in the Gluepot Reserve

Acacia acanthoclada, commonly known as harrow wattle, [2] is a species of flowering plant in the family Fabaceae and is endemic to southern continental Australia. It is a low, highly branched, spreading and spiny shrub with wedge-shaped to triangular or egg-shaped phyllodes with the narrower end towards the base, and spherical heads of up to 30 flowers, and linear, spirally-coiled pods.

Contents

Description

Acacia acanthoclada is a low, highly branched, spreading shrub that typically grows to a height of 0.3–2 m (1 ft 0 in – 6 ft 7 in), and has softly-white branchlets ending in sharp, tapering points. The phyllodes are erect, wedge-shaped to triangular or egg-shaped with the narrower end towards the base, 4–8 mm (0.16–0.31 in) long and 2–4 mm (0.079–0.157 in) wide. The flowers are borne in globe-shaped heads on a raceme 4–5 mm (0.16–0.20 in) in diameter on a peduncle 5–15 mm (0.20–0.59 in) long, the heads usually with 15 to 30 yellow flowers. Flowering occurs from July to December and the pods are linear but spirally coiled, up to 10–20 mm (0.39–0.79 in) long, 2.5–3.0 mm (0.098–0.118 in) wide, leathery, dark brown to black, and glabrous. The seeds are 2–4 mm (0.079–0.157 in) long with a thick aril. [2] [3] [4] [5] [6]

Taxonomy

The species was formally described in 1863 by Victorian Government Botanist Ferdinand von Mueller in his Fragmenta Phytographiae Australiae , based on plant material collected near Kulkyne. [7] [8]

In 1999, Bruce Maslin described two subspecies of A. acanthoclada in the journal Nuytsia and the names are accepted by the Australian Plant Census: [9]

Distribution and habitat

Harrow wattle grows in a variety of vegetation types and is relatively common in Western Australia, South Australia, Victoria and New South Wales.

Conservation status

Both subspecies of Acacia acanthoclada are listed as "not threatened" by the Western Australian Government Department of Biodiversity, Conservation and Attractions, [11] [15] but subsp. acanthoclada is listed as "endangered" under the New South Wales Government Biodiversity Conservation Act 2016 . [12]

See also

Related Research Articles

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References

  1. 1 2 "Acacia acanthoclada". Australian Plant Census. Retrieved 26 December 2022.
  2. 1 2 "Acacia acanthoclada". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  3. "Acacia acanthoclada". World Wide Wattle. Western Australian Herbarium . Retrieved 26 December 2019.
  4. "Acacia acanthoclada". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water. Retrieved 26 December 2023.
  5. Tindale, Mary D.; Kodela, Phillip (2001). Orchard, Anthony E.; Wilson, Annette J.G. (eds.). Flora of Australia (PDF). pp. 480–483. Retrieved 26 December 2023.
  6. 1 2 3 "Acacia acanthoclada". State Herbarium of South Australia. Retrieved 26 December 2023.
  7. "Acacia acanthoclada'". APNI. Retrieved 26 December 2023.
  8. von Mueller, Ferdinand (1863). Fragmenta phytographiae Australiae. Vol. 3. Melbourne: Victorin Government Printer. p. 127. Retrieved 26 December 2023.
  9. Maslin, Bruce (1999). "Acacia miscellany 16. The taxonomy of fifty-five species of Acacia, primarily Western Australian, in section Phyllodineae (Leguminosae: Mimosoideae)". Nuytsia. 12 (3): 313–315. Retrieved 26 December 2023.
  10. "Acacia acanthoclada subsp. acanthoclada". Australian Plant Census. Retrieved 26 December 2022.
  11. 1 2 3 "Acacia acanthoclada F.Muell. subsp. acanthoclada". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  12. 1 2 3 Kodela, Philip G. "Acacia acanthoclada subsp. acanthoclada". Royal Botanic Gardens, Sydney. Retrieved 26 December 2023.
  13. 1 2 "Acacia acanthoclada subsp. acanthoclada". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 26 December 2023.
  14. "Acacia acanthoclada subsp. glaucescens". Australian Plant Census. Retrieved 26 December 2022.
  15. 1 2 3 "Acacia acanthoclada subsp. glaucescens Maslin". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  16. 1 2 "Acacia acanthoclada subsp. glaucescens". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 26 December 2023.