Acacia binata

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Acacia binata
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. binata
Binomial name
Acacia binata
Acacia binataDistMap115.png
Occurrence data from AVH
Synonyms [2]

Racosperma binatum(Maslin) Pedley

Acacia binata is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a dense, domed, glabrous shrub with phyllodes that are more or less circular in cross section, spherical to slightly oblong heads of golden-yellow flowers, and curved or coiled wavy pods.

Contents

Description

Acacia binata is a dense, domed, glabrous shrub that typically grows to a height of 0.25–1 m (9.8 in – 3 ft 3.4 in) with many branches at ground level at first. The phyllodes are fleshy, green, more or less circular in cross section 8–17 mm (0.31–0.67 in) long and 1.0–1.5 mm (0.039–0.059 in) wide with three obscure veins. The flowers are borne in pairs of spherical to slightly oblong heads in racemes on a peduncle 6–15 mm (0.24–0.59 in) long. Each head is 3.5–5 mm (0.14–0.20 in) in diameter with usually 10 to 20 golden-yellow flowers. Flowering occurs from August to October, and the pods are curved to irregularly coiled, firmly leathery to thinly crust-like, 35 mm (1.4 in) long and 3.0–3.5 mm (0.12–0.14 in) wide containing grey to grey-brown, oblong to elliptic or egg-shaped seeds 2.5–3 mm (0.098–0.118 in) long with a relatively large aril. [3] [4] [5]

Taxonomy

Acacia binata was first formally described in 1978 by Bruce Maslin in the journal Nuytsia from specimens he collected 12 km (7.5 mi) north-north-west of Ongerup in 1973. [5] [2] The specific epithet (binata) means 'born', referring to the racemes that are reduced to "twin peduncles". [5] [6]

Distribution and habitat

This species of wattle has a discontinuous distribution in the Coolgardie, Esperance Plains and Mallee bioregions of south-western Western Australia where it is found in low-lying areas on undulating plains growing in rocky clay-loam soils. [7] It is found from around Ongerup to Mount Beaumont, around 90 km (56 mi) north of Esperance. [3] [7]

See also

References

  1. ↑ "Acacia binata". Australian Plant Census. Retrieved 13 April 2025.
  2. 1 2 "Acacia binata". APNI. Retrieved 13 April 2025.
  3. 1 2 "Acacia binata". World Wide Wattle. Western Australian Herbarium . Retrieved 28 March 2019.
  4. ↑ Maslin, Bruce R. Kodela, Phillip G.; Orchard, Anthony E. (eds.). "Acacia binata". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 13 April 2025.
  5. 1 2 3 Maslin, Bruce R. (1978). "Studies in the genus Acacia (Mimosaceae) - 7 - The taxonomy of some diaphyllodinous species". Nuytsia. 2 (4): 202–203. doi:10.58828/nuy00041 . Retrieved 13 April 2025.
  6. ↑ George, Alex; Sharr, Francis (2021). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 147. ISBN   9780958034180.
  7. 1 2 "Acacia binata". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
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