Acacia nervosa

Rib wattle
	A. nervosa upright habit
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fabales
Family:	Fabaceae
Clade:	Mimosoideae
Genus:	Acacia
Species:	A. nervosa
Binomial name
	Acacia nervosa; DC.
	Occurrence data from AVH
Synonyms
	Racosperma nervosum

Last updated March 11, 2021

Acacia nervosa, commonly known as rib wattle^[1]^[2]ribbed wattle^[3] or perfumed wattle,^[2] is a shrub belonging to the genus Acacia and the subgenus Phyllodineae.

Description

The erect or sprawling shrub typically grows to a height of 0.2 to 0.5 metres (0.7 to 1.6 ft). It blooms from June to October and produces yellow flowers.^[1] The shrub can be either single or multi-stemmed, sprouting from a woody root-stock. The branchlets are pruinose and prominently ribbed. The pungent, greyish green phyllodes are slightly inequilateral with a narrowly elliptic to straight or shallowly incurved shape. Phyllodes are 1 to 5 centimetres (0.4 to 2.0 in) in length with a width of 4 to 12 millimetres (0.157 to 0.472 in) long. The inflorescences are two to four headed. The prolific, showy, globular heads contain 7 to 12 loosely grouped bright golden flowers. The woody dark brown seed pods that follow have a twisted narrowly oblong shape. The pods are up to 5 cm (2.0 in) long and 8 to 9 mm (0.315 to 0.354 in) wide with thick margins. The oblong to circular seeds found in the pod are shiny, greyish brown and 3 to 4 mm (0.118 to 0.157 in) long.^[4]

Taxonomy

The species was first formally described by the botanist Augustin Pyramus de Candolle in 1825 as part of the work Leguminosae. Prodromus Systematis Naturalis Regni Vegetabilis.^[5] The type specimen was collected in 1801 in Geographe Bay by Louis de Freycinet, a member of the Nicolas Baudin expedition.^[4]

The only synonym for the species is Racosperma nervosum as described by Leslie Pedley.^[5]

The species belongs to the Acacia myrtifolia group along with other dwarf members including Acacia obovata and Acacia pygmaea .^[4]^[6]

Distribution

It is native to an area in the Great Southern, South West and Peel regions of Western Australia where it grows in gravelly clay or sandy lateritic soils.^[1] It occurs in a block as far north as Mogumber and along the coast south to Cape Naturaliste then east along the coast as far as Albany. Some outlying populations are found in Tammin, Katanning and Mount Barker. It is often found near watercourses or as a part of Eucalyptus woodland or forest communities.^[4]

Cultivation

The shrub is available commercially in seed form or as a seedling. The hardy plant is dieback resistant.^[7] Seeds have to be pretreated with hot water prior to planting.^[2] and the seed will take about four weeks to germinate.^[8]

Related Research Articles

Acacia myrtifolia, known colloquially as myrtle wattle, red stem wattle or red-stemmed wattle, is a species of Acacia native to coastal areas of southern and eastern Australia.

Acacia effusifolia is a shrub or tree belonging to the genus Acacia and the subgenus Juliflorae. It is native to an area in the Mid West and the Wheatbelt regions of Western Australia.

Acacia gardneri is a shrub belonging to the genus Acacia and the subgenus Juliflorae native to Western Australia.

Acacia gonocarpa, commonly known as wuluru, is a tree or shrub belonging to the genus Acacia and the subgenus Juliflorae. It is native to northern Australia.

Acacia inophloia, commonly known as fibre-barked wattle, is a tree or shrub belonging to the genus Acacia and the subgenus Juliflorae that is native to Western Australia.

Acacia leptophleba is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to northern Australia.

Acacia ptychophylla is a shrub belonging to the genus Acacia and the subgenus Juliflorae the is endemic to arid areas of north western Australia.

Acacia ramulosa, commonly known as horse mulga or bowgada wattle, is a shrub belonging to the genus Acacia and the subgenus Juliflorae endemic to arid areas of Australia.

Acacia richardsii is a shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to north western Australia.

Acacia tenuispica is a tree or shrub belonging to the genus Acacia and the subgenus Juliflorae that is endemic to north western Australia.

Acacia auronitens is a shrub belonging to the genus Acacia and the subgenus Phyllodineae endemic to Western Australia.

Acacia baxteri, commonly known as Baxter's wattle, is a shrub belonging to the genus Acacia and the subgenus Phyllodineae, and is endemic to the south west of Western Australia.

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

Acacia celastrifolia, commonly known as the glowing wattle, is a shrub or tree belonging to the genus Acacia and the subgenus Phyllodineae native to Western Australia.

Acacia clydonophora is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to Western Australia.

Acacia divergens is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is native to Western Australia.

Acacia melleodora, commonly known as scented wax wattle, waxy wattle, honey wattle or honey scented wattle, is a shrub belonging to the genus Acacia and the subgenus Phyllodineae that is endemic to arid parts of central Australia.

Acacia spinosissima is a shrub of the genus Acacia and the subgenus Phyllodineae native to south western Australia.

Acacia urophylla, commonly known as pointed leaved acacia, tall-leaved acacia, veined wattle or net-leaved wattle, is a shrub of the genus Acacia and the subgenus Phyllodineae endemic to Western Australia.

Acacia kybeanensis, commonly known as kybean wattle or kybeyan wattle, is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to south eastern Australia.

References

1 2 3 "Acacia nervosa". FloraBase . Western Australian Government Department of Parks and Wildlife.
1 2 3 "Acacia nervosa". Nindethana Australian Seeds. Retrieved 20 August 2018.
↑ Cliff and Sharon Burns. "Darlington and surrounds local flora and bushlands" (PDF). Shire of Mundaring. Archived from the original (PDF) on 5 March 2017. Retrieved 20 August 2018.
1 2 3 4 "Acacia nervosa". World Wide Wattle. Western Australian Herbarium. Retrieved 20 August 2018.
1 2 "Acacia nervosa DC". Atlas of Living Australia. Global Biodiversity Information Facility . Retrieved 20 August 2018.
↑ A. E. Orchard; Annette J. G. Wilson (2001). Flora of Australia. Volume 11A, Mimosaceae, Acacia. CSIRO publishing. p. 445. ISBN 9780643067172.
↑ "Acacia nervosa Rib Wattle". Apace WA. Retrieved 20 August 2018.
↑ Luke Sweedman; David Merritt (2006). Australian Seeds: A Guide to Their Collection, Identification and Biology. CSIRO publishing. ISBN 9780643098602.

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[FloraBase-1] 1 2 3 "Acacia nervosa". FloraBase . Western Australian Government Department of Parks and Wildlife.

[nin-2] 1 2 3 "Acacia nervosa". Nindethana Australian Seeds. Retrieved 20 August 2018.

[3] Cliff and Sharon Burns. "Darlington and surrounds local flora and bushlands" (PDF). Shire of Mundaring. Archived from the original (PDF) on 5 March 2017. Retrieved 20 August 2018.

[www-4] 1 2 3 4 "Acacia nervosa". World Wide Wattle. Western Australian Herbarium. Retrieved 20 August 2018.

[at-5] 1 2 "Acacia nervosa DC". Atlas of Living Australia. Global Biodiversity Information Facility . Retrieved 20 August 2018.

[6] A. E. Orchard; Annette J. G. Wilson (2001). Flora of Australia. Volume 11A, Mimosaceae, Acacia. CSIRO publishing. p. 445. ISBN 9780643067172.

[7] "Acacia nervosa Rib Wattle". Apace WA. Retrieved 20 August 2018.

[8] Luke Sweedman; David Merritt (2006). Australian Seeds: A Guide to Their Collection, Identification and Biology. CSIRO publishing. ISBN 9780643098602.

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