Acacia gibbosa

Last updated

Acacia gibbosa
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. gibbosa
Binomial name
Acacia gibbosa
Acacia gibbosaDistMap383.png
Occurrence data from AVH
Synonyms [1]
  • Racosperma gibbosum(R.S.Cowan & Maslin) Pedley
  • Acacia cyperophyllaauct. non F.Muell. ex Benth.: Diels, F.L.E. & Pritzel, E.G. (6 December 1904)

Acacia gibbosa is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a dense, rounded shrub or tree with glabrous branchlets, narrowly linear phyllodes, oblong to cylindrical head of golden yellow flowers and linear, thinly firmly papery pods.

Contents

Description

Acacia gibbosa is rounded shrub or tree that typically grows to a height of 1–3 m (3 ft 3 in – 9 ft 10 in) and has glabrous branchlets. Its phyllodes are narrowly linear, straight to slightly curved and terete, 40–95 mm (1.6–3.7 in) long, 0.8–1.5 mm (0.031–0.059 in) wide, green to grey-green and glabrous. The flowers are borne in pairs of oblong or short cylindrical heads on peduncles 1.5–4 mm (0.059–0.157 in) long, each head 6–8 mm (0.24–0.31 in) long and 4.0–4.5 mm (0.16–0.18 in) in diameter with 22 to 27 golden yellow flowers. Flowering occurs in August and September, and the pods are linear, straight, up to 65 mm (2.6 in) long, 2.0–2.5 mm (0.079–0.098 in) wide, glabrous and firmly papery. The seeds are narrowly oblong, 2.8–3.0 mm (0.11–0.12 in) long and glossy black with a crested aril. [2] [3] [4] [5]

Taxonomy

Acacia gibbosa was first formally described in 1995 by the botanists Richard Sumner Cowan and Bruce Maslin in the journal Nuytsia from specimens collected by Maslin 4.5 mi (7.2 km) north-west of Southern Cross towards Bullfinch in 1971. [2] [6] The specific epithet (gibbosa) means 'hunch-backed', and refers to the peduncular bracts that have a gibbosity on the upper side. [3]

Distribution and habitat

This species of wattle grows in low-lying areas and on undulating plains in woodland, scrub and shrubland between Koorda and Kellerberrin and east to the Coolgardie area and Dundas in the Avon Wheatbelt, Coolgardie, Geraldton Sandplains and Mallee bioregions of south-western Western Australia. [7]

Conservation status

Acacia gibbosa is listed as "not threatened" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions. [7]

See also

References

  1. 1 2 "Acacia gibbosa". Australian Plant Census. Retrieved 25 January 2026.
  2. 1 2 Cowan, Richard S.; Maslin, Bruce R. (1995). "Acacia Miscellany 10. New taxa and notes on previously described taxa of Acacia, mostly section Juliflorae (Leguminosae: Mimosoideae), in Western Australia". Nuytsia. 10 (1): 28–29. Retrieved 25 January 2026.
  3. 1 2 Cowan, Richard S.; Maslin, Bruce R. Kodela, Phillip G. (ed.). "Acacia gibbosa". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 25 January 2026.
  4. ↑ "Acacia gibbosa". World Wide Wattle. Western Australian Herbarium . Retrieved 7 November 2018.
  5. ↑ "Acacia gibbosa". Australian Biological Resources Study. Retrieved 25 January 2026.
  6. ↑ "Acacia gibbosa". Australian Plant Name Index. Retrieved 25 January 2026.
  7. 1 2 "Acacia gibbosa". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.