Acacia costata

Last updated

Acacia costata
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. costata
Binomial name
Acacia costata
Acacia costataDistMap220.png
Occurrence data from AVH
Synonyms [1]

Racosperma costatum(Benth.) Pedley

Acacia costata is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a spreading shrub with more or less sessile, narrowly lance-shaped, straight or slightly curved, sharply pointed phyllodes, spherical heads of golden yellow flowers and terete, dark reddish brown pods.

Contents

Description

Acacia costata is a spreading shrub that typically grows to a height of 20–50 cm (7.9–19.7 in) and has ribbed, woolly hairy branchlets that become glabrous as they age. Its phyllodes are more or less sessile, narrowly lance-shaped, straight or slightly curved, 6–15 mm (0.24–0.59 in) long and 1.5–2.5 mm (0.059–0.098 in) wide and sharply pointed with five main veins and a prominent midrib. The flowers are borne in a spherical head in axils on a peduncle 5–12 mm (0.20–0.47 in) long, each head with 13 to 19 loosely arranged golden yellow flowers. Flowering occurs from May to June, and the pods are curved, terete, dark reddish brown and up to 50 mm (2.0 in) long and 4.0–4.5 mm (0.16–0.18 in) wide. The seeds are about 5 mm (0.20 in) long with a conical aril in the end. [2] [3] [4] [5]

Taxonomy

Acacia costata was first formally described in 1842 by George Bentham in Hooker's London Journal of Botany from specimens collected near the Swan River Colony by James Drummond. [6] [7] The specific epithet (costata) means 'ribbed', referring to the stems. [8]

Distribution and habitat

This species of wattle is native to an area along the west coast between Walebing, Calingiri and Cataby, with an earlier collection from near Perth, in the Avon Wheatbelt, Geraldton Sandplains, Jarrah Forest and Swan Coastal Plain bioregions of south-western Western Australia. [2] [3] It is usually found on lateritic ridges and sandplains growing in sandy or gravelly soils. [5] [3]

Conservation status

Acacia costata is listed as "not threatened" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions. [5]

See also

References

  1. 1 2 "Acacia costata". Australian Plant Census. Retrieved 27 July 2025.
  2. 1 2 Maslin, Bruce R. Kodela, Phillip G.; Orchard, Anthony E. (eds.). "Acacia costata". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 27 July 2025.
  3. 1 2 3 "Acacia costata". World Wide Wattle. Retrieved 27 July 2025.
  4. ↑ "Acacia costata". Australian Biological Resources Study. Retrieved 27 July 2025.
  5. 1 2 3 "Acacia costata". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  6. ↑ "Acacia costata". APNI. Retrieved 27 July 2025.
  7. ↑ Bentham, George; Hooker, William Jackson (1842). "Notes on Mimoseae, with a synopsis of species". London Journal of Botany. 1: 339. Retrieved 27 July 2025.
  8. ↑ George, Alex S.; Sharr, Francis A. (2023). Western Australian Plant Names and Their Meanings - A Glossary (fifth ed.). Kardinya: Four Gables Press. p. 174. ISBN   9780645629538.
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.