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Acacia botrydion

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Acacia botrydion

Priority Four — Rare Taxa (DEC)
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Caesalpinioideae
Clade: Mimosoid clade
Genus: Acacia
Species:
A. botrydion
Binomial name
Acacia botrydion
Occurrence data from AVH
Synonyms[1]
  • Acacia semicircinalis Maiden & Blakely p.p.
  • Racosperma botrydion (Maiden) Pedley

Acacia botrydion is a species of flowering plant in the family Fabaceae and is endemic to the Wongan Hills area in the south-west of Western Australia. It is an intricately branched, open shrub with spiny branchlets, elliptic to widely elliptic phyllodes, spherical heads of light golden-yellow flowers, and thinly crust-like, curved or coiled pods.

Description

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Acacia botrydion is an intricately branched, open shrub that typically grows to a height of 0.3–1.5 m (1 ft 0 in – 4 ft 11 in) and 3 m (9.8 ft) wide, and has spiny branches. Its phyllodes are elliptic to widely elliptic, more or less wavy, 9–15 mm (0.35–0.59 in) long, 4–12 mm (0.16–0.47 in) wide and slightly sharply pointed. The flowers are borne in one or two spherical head in axils, on peduncles about 10 mm (0.39 in) long. Each head has 30 to 40 light golden–yellow flowers. Flowering occurs from July to September and the pods are curved or coiled, thinly crust-like, reddish brown, up to 40 mm (1.6 in) long and 4 mm (0.16 in) wide with inflated oblong, brown seeds 3–4 mm (0.12–0.16 in) long with an aril on the end.[2][3]

Taxonomy

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Acacia botrydion was first formally described in 1982 by Bruce Maslin in the journal Nuytsia from specimens he collected about 12.5 km (7.8 mi) north-west of Wongan Hills township towards Piawaning in 1975.[3][4] The specific epithet (botrydion) refers to the flower heads which are bunched at the ends of the branches.[3]

Distribution and habitat

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This species of wattle is fairly common on lateritic hills in mallee, often associated with species of Eucalyptus, Melaleuca and Phebalium, and is only known from the Wongan Hills area in the Avon Wheatbelt bioregion of south-western Western Australia.[3]

Conservation status

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Acacia botrydion is listed as "Priority Four" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions,[5] meaning that is rare or near threatened.[6]

See also

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References

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  1. ^ a b "Acacia botrydion". Australian Plant Census. Retrieved 27 April 2025.
  2. ^ Maslin, Bruce R. Kodela, Phillip G. (ed.). "Acacia botrydion". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 27 April 2025.
  3. ^ a b c d Baslin, Bruce R. (1982). "Studies in the genus Acacia (Leguminosae: Mimosoideae) - 10. Acacia species of the Wongan Hills, Western Australia". Nuytsia. 4 (1): 30–32. Retrieved 27 April 2025.
  4. ^ "Acacia botrydion". APNI. Retrieved 26 April 2025.
  5. ^ "Acacia botrydion". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  6. ^ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 27 April 2025.