Acacia laricina

Acacia laricina
Variety crassifolia near Ravensthorpe
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. laricina
Binomial name
Acacia laricina
"Acacia laricina" occurrence data from Australasian Virtual Herbarium
Acacia laricina occurrence data from Australasian Virtual Herbarium[2]
Synonyms[1]

Racosperma laricinum (Meisn.) Pedley

Acacia laricina is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a dense, spreading, semi-prostrate, more or less domed shrub with hairy branchlets, crowded phyllodes continuous with the branchlets and five-sided in cross section, and thinly leathery terete to subterete pods.

Description

Acacia laricina is a dense, spreading, semi-prostrate, more or less domed shrub that typically grows to a height of 0.25–0.5 m (0.8–1.6 ft) and has branchlets covered in a fine, white powdery coating and hairs pressed against the surface. Its phyllodes are crowded, continuous with the branchlets, ascending to erect, straight to slightly curved, five-sided in cross section, 15–50 mm (0.59–1.97 in) long and 0.7–1.7 mm (0.028–0.067 in) wide. The phyllodes have on oblique pointed tip, five prominent veins, and there are linear to triangular or bristly stipules 3–6 mm (0.12–0.24 in) long at the base. The flowers are borne in a single spherical head in axils on a hairy peduncle usually 7–20 mm (0.28–0.79 in) long, the heads with 17 to 30 cream-coloured to pale yellow flowers.[3][4][5][6]

Taxonomy

Acacia laricina was first formally described in 1844 by Carl Meissner in Lehmann's Plantae Preissianae in 1840.[7][8] The specific epithet (laricina) means 'Larch tree-like'.[9]

In 1999, Bruce Maslin described two varieties of A. laricina in the journal Nuytsia,[3] and the names are accepted by the Australian Plant Census:

  • Acacia laricina var. crassifolia Maslin[10] has slightly roughened, straight to slightly curved phyllodes, peduncles 3–10 mm (0.12–0.39 in) long and pods about 2 mm (0.079 in) wide.[3][4][11][12]
  • Acacia laricina Meisn. var. laricina[13] has smooth, mostly slightly curved phyllodes, peduncles 10–20 mm (0.39–0.79 in) long and pods about 4 mm (0.16 in) wide.[3][4][14][15]

Distribution and habitat

This species of wattle occurs in the southwest of Western Australia between Dumbleyung, Frankland, Western Australia and near the Oldfield River in the Avon Wheatbelt, Esperance Plains, Jarrah Forest and Mallee bioregions.[6]

  • Variety crassifolia grows in loamy sand or sand over clay on rocky ridges in open mallee scrub and is confined to the Ravensthorpe Range, near Ravensthorpe.[11][12][16]
  • Var. laricina often grows in gravelly sand in woodland or low shrubland.[14][15][17]

Conservation status

Acacia laricina and both subspecies are listed as 'not threatened' by the Government of Western Australia Department of Biodiversity, Conservation and Attractions.[6][16][17]

See also

References

  1. 1 2 "Acacia laricina". Australian Plant Census. Retrieved 14 July 2026.
  2. ↑ "DOI Details". doi.ala.org.au. doi:10.26197/5c0b1388984eb. Retrieved 8 December 2018.
  3. 1 2 3 4 Maslin, Bruce R. (1999). "Acacia miscellany 16. The taxonomy of fifty-five species of Acacia, primarily Western Australian, in section Phyllodineae (Leguminosae: Mimosoideae)". Nuytsia. 12 (3): 365–367. Retrieved 15 July 2026.
  4. 1 2 3 "Acacia laricina". World Wide Wattle. CSIRO Publishing. Retrieved 30 June 2020.
  5. ↑ Maslin, Bruce R. "Acacia laricina". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 15 July 2026.
  6. 1 2 3 "Acacia laricina". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  7. ↑ "Acacia laricina". Australian Plant Name Index. Retrieved 15 July 2026.
  8. ↑ Meissner, Carl (1844). Lehmann, Johann G.C. (ed.). Plantae preissianae sive enumeratio plantarum quas in australasia occidentali et meridionali-occidentali annis 1838-1841 collegit Ludovicus Preiss. Hamburg: Sumptibus Meissneri. pp. 6–7. Retrieved 15 July 2026.
  9. ↑ George, Alex S.; Sharr, Francis A. (2023). Western Australian Plant Names and Their Meanings - A Glossary (fifth ed.). Kardinya: Four Gables Press. p. 241. ISBN 9780645629538.
  10. ↑ "Acacia laricina var. crassifolia". Australian Plant Census. Retrieved 15 July 2026.
  11. 1 2 Maslin, Bruce R. "Acacia laricina var. crassifolia". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 15 July 2026.
  12. 1 2 Maslin, Bruce R. "Acacia laricina var. crassifolia". Australian Biological ResourcesStudy. Retrieved 15 July 2026.
  13. ↑ "Acacia laricina var. laricina". Australian Plant Census. Retrieved 15 July 2026.
  14. 1 2 Maslin, Bruce R. "Acacia laricina var. laricina". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 15 July 2026.
  15. 1 2 Maslin, Bruce R. "Acacia laricina var. laricina". Australian Biological ResourcesStudy. Retrieved 15 July 2026.
  16. 1 2 "Acacia laricina var. crassifolia". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  17. 1 2 "Acacia laricina var. laricina". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
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