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Acacia obovata

From Wikipedia, the free encyclopedia

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

Acacia obovata is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.

Description

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The erect dense shrub typically grows to a height of 0.3 to 0.6 metres (1.0 to 2.0 ft).[1] It is often has multiple slender stems and has a woody rootstock with hairy branchlets and narrowly triangular stipules with a length of 1.5 to 4 mm (0.059 to 0.157 in). It has green elliptic to broadly elliptic or obovate shaped phyllodes with a length of 1.5 to 5 cm (0.59 to 1.97 in) and a width of 1 to 2.5 cm (0.39 to 0.98 in) and prominent midrib and marginal nerves.[2] It blooms from March to September and produces white-cream-yellow flowers.[1] The inflorescences occur singly with spherical flower-heads containing five to nine loosely packed yellow to white coloured flowers that dry to an orange colour. The woody brown seed pods that form after flowering have a linear shape but can be spirally twisted when young. The pods have a length of around 11 cm (4.3 in) and a width of 5 to 6 mm (0.20 to 0.24 in) to 11 cm long, 5–6 mm wide, coriaceous-crustaceous to subwoody, glabrous; margins thick and contain glossy dark brown seeds with an oblong to elliptic shape.[2]

Taxonomy

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The species was first formally described by the botanist George Bentham in 1842 as a part of William Jackson Hookers' work Notes on Mimoseae, with a synopsis of species as published in the London Journal of Botany. It was reclassified as Racosperma obovatum by Leslie Pedley in 2003 then transferred back to genus Acacia in 2006.[3]

Distribution

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It is native to a scattered area along the west coast in the South West, Peel and Wheatbelt regions of Western Australia where it grows in lateritic soils.[1] It is found as far north as Jurien Bay with a disjunct distribution south through parts of the Darling Range down to around Augusta where it is often a part of Eucalyptus marginata and Corymbia calophylla forest communities and less frequently in low open heath lands.[2]

See also

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References

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  1. ^ a b c "Acacia obovata". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  2. ^ a b c "Acacia obovata". World Wide Wattle. Western Australian Herbarium. Retrieved 19 May 2019.
  3. ^ "Acacia obovata Benth". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 19 May 2019.