Acacia alcockii

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Alcock's wattle
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. alcockii
Binomial name
Acacia alcockii
Acacia alcockiiDistMap26.png
Synonyms [1]

Racosperma alcockii(Maslin & Whibley) Pedley

Acacia alcockii, also known as Alcock's wattle, [2] is a species of flowering plant in the family Fabaceae and is endemic to South Australia. It is a bushy shrub with narrowly elliptic to lance-shaped phyllodes with the narrower end towards the base, and racemes of 5 to 11 spherical heads of pale yellow flowers, and oblong pods.

Contents

Description

Acacia alcockii is a bushy shrub that typically grows to a height of up to about 3 m (9.8 ft) and often forms suckers. Its branchlets are glabrous and dark reddish. Its phyllodes narrowly elliptic to lance-shaped with the narrower end towards the base, mostly 60–90 mm (2.4–3.5 in) long and 8–21 mm (0.31–0.83 in) wide, with a gland usually 8–12 mm (0.31–0.47 in) above the pulvinus, the pulvinus itself 2–6 mm (0.079–0.236 in) long. [2] [3] [4] [5]

The flowers are borne in spherical heads of 5 to 11 on a raceme mostly 2–4 mm (0.079–0.157 in) long on a peduncle mostly 4–5 mm (0.16–0.20 in) long, each head with 25 to 40 pale yellow flowers. Flowering time varies between populations, and the fruit is an oblong to narrowly oblong, leathery to crusty pod up to 90 mm (3.5 in) long and 8–17 mm (0.31–0.67 in) wide, containing dull black oblong seeds 5–6 mm (0.20–0.24 in) long. [2] [3] [4] [5]

Taxonomy

Acacia alcockii was first formally described in 1987 in the journal Nuytsia from specimens collected in Lincoln National Park in 1983. [5] [6] The specific epithet honours Charles Raymond Alcock, [7] who was a plant collector well known for the specimens he collected on the Eyre Peninsula including the first collection of A. alcockii. [8]

This species of wattle is included in the Subgenus Phyllodineae, section Acacia. [5] [9]

Distribution and habitat

Alcock's wattle is native to southern parts of the Eyre Peninsula on the south west coast between Mount Dutton and Mount Drummond. On the south east coast the shrub is found between Billy Light Point close to Port Lincoln to the Lincoln National Park [3] where it grows in sandy soils over limestone and sometimes in skeletal soils above granite. [8]

See also

Related Research Articles

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References

  1. 1 2 "Acacia alcockii". Australian Plant Census. Retrieved 30 May 2024.
  2. 1 2 3 Maslin, Bruce R. Kodela, Phillip G. (ed.). "Acacia alcockii". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 30 May 2024.
  3. 1 2 3 "Acacia alcockii". World Wide Wattle. Western Australian Herbarium. Retrieved 30 May 2024.
  4. 1 2 "Acacia alcockii". State Herbarium of South Australia. Retrieved 30 May 2024.
  5. 1 2 3 4 Maslin, Bruce R.; Whibley, David J. (1987). "The taxonomy of some South Australian Acacia section Phyllodineae species (Leguminosae: Mimosoideae)". Nuytsia. 6 (1): 19–23. Retrieved 31 May 2024.
  6. ↑ "Acacia alcockii". Australian Plant Name Index. Retrieved 30 May 2024.
  7. ↑ "Alcock, Charles Raymond (Ray) (1921 - 2015)". Council of Heads of Australian Herbaria. Retrieved 31 May 2024.
  8. 1 2 "Acacia alcockii (Leguminosae) Alcock's Wattle". Seeds of South Australia. Government of South Australia . Retrieved 5 April 2019.
  9. ↑ "Species Gallery Home". World Wide Wattle. Retrieved 28 May 2024.
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