Acacia inceana

Acacia inceana
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Embryophytes
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Caesalpinioideae
Clade: Mimosoid clade
Genus: Acacia
Species:
A. inceana
Binomial name
Acacia inceana
Occurrence data from AVH
Synonyms[1]

Acacia inceana is a species of flowering plant in the family Fabaceae and is endemic to mostly inland areas of Western Australia. It is a shrub or tree with mostly glabrous branchlets, straight or slightly curved, terete to flat phyllodes, one or two spherical heads of yellow flowers, and linear, firmly papery to thinly leathery pods.

Description

Acacia inceana is shrub or tree that typically grows to a height of 1–4 m (3–13 ft) and has terete, mostly glabrous branchlets or covered with fine downy hairs at first. Its phyllodes are straight or slightly curved, terete to flat, 40–85 mm (1.6–3.3 in) long and 1.0–1.5 mm (0.039–0.059 in) in diameter and about 4 mm (0.16 in) wide when flattened. The end of the phyllodes is narrowed to a more or less rigid tip with one or two glands 4–15 mm (0.16–0.59 in) above the pulvinus. The flowers are borne in one or two spherical heads in axils on a peduncle 3–6 mm (0.12–0.24 in) long, each head 3.5–4.0 mm (0.14–0.16 in) in diameter, with 10 to 30 yellow flowers. Flowering occurs in August and September, an the pods are linear, slightly raised over but not constricted between the seeds, 40–100 mm (1.6–3.9 in) long and 3–4 mm (0.12–0.16 in) wide firmly papery to thinly leathery, tan, light- or pale-dull brown and glabrous. The seeds are oblong, 4–6 mm (0.16–0.24 in) long, subglossy dark brown with a white aril on the end.[2][3][4]

Taxonomy

Acacia inceana was first formally described in 1923 by the botanist Karel Domin in Vestnik Kralovske Ceske Spolecnosti Nauk, Trida Matematiko-Prirodevedecke from specimens collected by Walter Holinshed Ince.[5][6] The specific epithet (inceana) honours the collector of the type specimens.[7]

In 1995, Richard Cowan and Bruce Maslin described two subspecies of A. inceana[8] and in 2007 Maslin described a further subspecies,[9] and the names are accepted by the Australian Plant Census:

  • Acacia inceana subsp. conformis[10] has subterete to flat phyllodes 1–2 mm (0.039–0.079 in) wide.[8][11][12]
  • Acacia inceana subsp. inceana[13] has perfectly terete phyllodes.[8][14][15]
  • Acacia inceana subsp. latifolia[16] has subterete to flat phyllodes 3–6 mm (0.12–0.24 in) wide.[9][17][18]

Distribution

This species of wattle grows on the edges of salt lake, salt pans, flats and plains in the Avon Wheatbelt, Coolgardie, Murchison and Yalgoo bioregions mainly in inland regions of Western Australia.[19]

  • Subsp. conformis occurs from near Morawa, south-east to Hines Hill and east to Boorabbin and is a highly salt-tolerant species.[11][20]
  • Subsp. inceana main occurs within 35 km (22 mi) north and east of Kalgoorlie where it grows in red soil with scattered eucalypts, rarely in saline habitats.[14][21]
  • Subsp. latifolia is restricted to an area east of Wubin, where it grows in sandy loam near the edge of saline areas dominated by samphires.[17][22]

Conservation status

Acacia inceana and two of its subspecies are listed as 'not threatened', but subsp. latifolia is listed as 'Priority One' by the Government of Western Australia Department of Biodiversity, Conservation and Attractions,[22] meaning that it is known from only one or a few locations where it is potentially at risk.[23]

See also

References

  1. 1 2 "Acacia inceana". Australian Plant Census. Retrieved 10 June 2026.
  2. ↑ Cowan, Richard S.; Maslin, Bruce R.; Reid, Jordan E. Kodela, Philip G. (ed.). "Acacia inceana". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 11 June 2026.
  3. ↑ "Acacia inceana". WorldWideWattle. Western Australian Herbarium. Retrieved 21 April 2020.
  4. ↑ "Acacia inceana". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  5. ↑ "Australian Plant Collectors and Illustrators (I)". Council of Heads of Australasian Herbaria. Retrieved 11 June 2026.
  6. ↑ "Acacia inceana". Australian Plant Name Index. Retrieved 11 June 2026.
  7. ↑ George, Alex S.; Sharr, Francis A. (2023). Western Australian Plant Names and Their Meanings - A Glossary (fifth ed.). Kardinya: Four Gables Press. p. 228. ISBN 9780645629538.
  8. 1 2 3 Cowan, Richard S.; Maslin, Bruce R. (1995). "Acacia Miscellany 15. Five groups of microneurous species of Acacia (Leguminosae: Mimosoideae: section Plurinerves), mostly from Western Australia". Nuytsia. 10 (2): 233–235. Retrieved 11 June 2026.
  9. 1 2 Maslin, Bruce R. (2007). "Three new wattles (Acacia: Mimosoideae) from the Kalannie region, Western Australia". Nuytsia. 17: 230–232. Retrieved 11 June 2026.
  10. ↑ "Acacia inceana subsp. conformis". Australian Plant Census. Retrieved 11 June 2026.
  11. 1 2 Cowan, Richard S.; Maslin, Bruce R.; Reid, Jordan E. Kodela, Philip G. (ed.). "Acacia inceana subsp. conformis". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 11 June 2026.
  12. ↑ "Acacia inceana subsp. conformis". Australian Biological Resources Study. Retrieved 11 June 2026.
  13. ↑ "Acacia inceana subsp. inceana". Australian Plant Census. Retrieved 11 June 2026.
  14. 1 2 Cowan, Richard S.; Maslin, Bruce R.; Reid, Jordan E. Kodela, Philip G. (ed.). "Acacia inceana subsp. inceana". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 11 June 2026.
  15. ↑ "Acacia inceana subsp. inceana". Australian Biological Resources Study. Retrieved 11 June 2026.
  16. ↑ "Acacia inceana subsp. latifolia". Australian Plant Census. Retrieved 11 June 2026.
  17. 1 2 Maslin, Bruce R.; Reid, Jordan E. Kodela, Philip G. (ed.). "Acacia inceana subsp. latifolia". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 11 June 2026.
  18. ↑ "Acacia inceana subsp. latifolia". Australian Biological Resources Study. Retrieved 11 June 2026.
  19. ↑ "Acacia inceana". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  20. ↑ "Acacia inceana subsp. conformis". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  21. ↑ "Acacia inceana subsp. inceana". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  22. 1 2 "Acacia inceana subsp. latifolia". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  23. ↑ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Biodiversity, Conservation and Attractions. Retrieved 11 June 2026.
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