Acacia biflora

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Life-forms

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids I
Ordo: Fabales

Familia: Fabaceae
Subfamilia: Caesalpinioideae
Tribus: Acacieae
Genus: Acacia
Species: Acacia biflora
Name

Acacia biflora R.Br., 1813
Synonyms

Acacia triangularis Benth.
Racosperma biflorum (R.Br.) Pedley

Homonyms

Acacia biflora Paxton = = Acacia truncata (Burm.f.) Hoffmanns.

Distribution
Native distribution areas:
Acacia biflora

Continental: Australasia
Regional: Australia
Western Australia

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
References
Primary references

Brown, R. in W. T. Aiton, 1813. Hortus Kewensis; or, a Catalogue of the Plants Cultivated in the Royal Botanic Garden at Kew ed. 2, 5:463.

Links

Govaerts, R. et al. 2020. Acacia biflora in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2020 Jul 26. Reference page.
International Plant Names Index. 2019. Acacia biflora. Published online. Accessed: Jul 26 2019.
Tropicos.org 2019. Acacia biflora. Missouri Botanical Garden. Published on the internet. Accessed: 2019 Jul 26.
Hassler, M. Jul. Acacia biflora. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. Jul. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: Jul 26 {{{3}}}. Reference page.
USDA, ARS, Germplasm Resources Information Network. Acacia biflora in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.

Vernacular names
English: Two-flowered Acacia

Acacia biflora, commonly known as two-flowered acacia,[2] is a shrub belonging to the genus Acacia and the subgenus Phyllodineae.

Description

The prostrate to ascending, erect, open or dense shrub typically grows to a height of 0.1 to 0.5 metres (0 to 2 ft). It blooms from December to May and produces creamy-white flowers.[3] The branchlets are shortly covered with small soft hairs to sparsely or densely puberulous. The pungent green phyllodes are inequilateral, obtriangular to obdeltoid shape. They are usually 3 to 7 millimetres (0.12 to 0.28 in) in length with a width of 3 to 8 mm (0.12 to 0.31 in) but can be longer on older branches. It has simple inflorescences with one found per axil supported on peduncles that are 3 to 8 mm (0.12 to 0.31 in) long. The heads are globular containing two white to cream flowers. Following flowering curved narrowly oblong seed pods form that are around 5.5 centimetres (2.2 in) in length and 4 to 5 mm (0.16 to 0.20 in) wide. The glossy, greyish brown oblong seeds the pods contain are 3 to 3.5 mm (0.12 to 0.14 in) long.[4]
Taxonomy

The species was first formally described by the botanist Robert Brown in 1813 in the William Townsend Aiton work Hortus Kewensis.[5] The name is often misapplied to Acacia chrysocephala.[5]

A. biflora is part of the A. biflora group of Acacias along with A. chrysocephala, A. divergens, A. incrassata , A. mooreana, A. phlebopetala and A. robinae. The species all have similar structure but can be differentiated by flower characteristics.[4]

The specific epithet (biflora) is derived from the Latin prefix bi- meaning "two"[6]: 141  and the Latin word flos meaning "flower".[6]: 338 
Distribution

It is native to an area in the South West , Great Southern and Goldfields-Esperance regions of Western Australia where it grows in sandy to gravelly lateritic soils.[3] The shrub is found in a large continuous distribution from the Stirling Range National Park south to the coast and then east to near Jerramungup and Bremer Bay with disjunct populations in several areas further east including around Scaddan and at Lucky Bay in Cape Le Grand National Park.[4] It is often found as part of woodlands or low mallee scrubland communities.[4]
See also

List of Acacia species

References

"Acacia biflora". Australian Plant Census. Retrieved 28 July 2019.
"Australian Acacia biflora. Two-flowered Acacia. Wattle Paxton botanical c1840". Glenebon Pty Ltd. Retrieved 20 August 2018.
"Acacia biflora". FloraBase. Western Australian Government Department of Parks and Wildlife.
"Acacia biflora". World Wide Wattle. Western Australian Herbarium. Retrieved 20 August 2018.
"Acacia biflora R.Br". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 20 August 2018.
Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press.