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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 pentadenia
Subspecies: A. p. subsp. pentadenia – A. p. subsp. syntoma
Name

Acacia pentadenia Lindl., 1832
Synonyms

Racosperma pentadenium (Lindl.) Pedley (2003)

Distribution
Native distribution areas:
Acacia pentadenia
Acacia pentadenia

Continental: Australasia
Regional: Australia
Western Australia

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

Acacia pentadenia hort. ex K.Koch = Acacia nigricans (Labill.) R.Br.

References
Primary references

Lindley, J., 1832. Edwards's Botanical Register 18: t. 1521.

Links

Govaerts, R. et al. 2020. Acacia pentadenia in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2020 Aug 11. Reference page.
International Plant Names Index. 2019. Acacia pentadenia. Published online. Accessed: Aug 11 2019.
Tropicos.org 2019. Acacia pentadenia. Missouri Botanical Garden. Published online. Accessed: 11 Aug 2019.
Catalogue of Life: 2021 Annual Checklist
Acacia pentadenia – Taxon details on World Wide Wattle.
USDA, ARS, Germplasm Resources Information Network. Acacia pentadenia in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.

Vernacular names
English: Catbush, Karri Wattle

Acacia pentadenia, commonly known as karri wattle, is a shrub or tree of the genus Acacia and the subgenus Pulchellae.[1]

Description

The slender willowy shrub or tree typically grows to a height of 2 to 5 metres (7 to 16 ft).[1] The slender erect habit forms a dense crown of evergreen foliage.[2] The branchlets are normally glabrous and ribbed.[3] The feather like phyllodes[2] are large made up of two to five pairs of pinnae with the larger being 25 to 80 millimetres (1.0 to 3.1 in) in length. The pinnae are made from 12-30 pairs of glabrous green pinnules that are only 3 to 6 mm (0.118 to 0.236 in) long and 1 to 2.5 mm (0.039 to 0.098 in) wide.[3] It blooms from July to December and produces cream-yellow flowers.[1] The flowers are supported in inflorescences that normally contain 15 to 25 flowers. It will later form seed pods that are around 60 mm (2.4 in) long and 3 to 4 mm (0.12 to 0.16 in) containing oblong seeds. The plants are sometimes known as cat bush from there offensive odour.[3]
Classification

The species was first formally described by the botanist John Lindley in 1833 as part of the work The Botanical Register[3] using specimens collected around the Swan River Colony by James Drummond. The species is similar in appearance to Acacia subracemosa and both belong to the Acacia brownii group.[3]

There is two recognised subspecies:

Acacia pentadenia Lindl. subsp. pentadenia[4]
Acacia pentadenia subsp. syntoma J.E.Reid, Ward.-Johnson & Maslin[5]

Distribution

It is native to an area in the South West and Great Southern regions of Western Australia.[1] It is commonly found from around Nannup south east to around Denmark with another population near Albany.
Ecology

A. pentadenia prefers sand or loamy soils and is usually part of the understorey in karri (Eucalyptus diversicolor) forests or karri-marri (Corymbia calophylla) forests where it can forms dense stands.[3] Other associated species include Agonis flexuosa, Allocasuarina decussata and Chorilaena quercifolia as well as a host of wild flowers. Karri forests are home to some 2000 plant taxa.[6]
Cultivation

The seeds for the plant are commercially available.[2][7] The shrub is best suited to temperate climates. It grows well in sheltered semi-shade areas and in medium to heavy soils. It is both drought and frost tender.[2]
See also

List of Acacia species

References

"Acacia pentadenia". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
"Acacia pentadenia Kari wattle". Australian Seed. Retrieved 15 August 2018.
"Acacia pentadenia". WorldWideWattle. Western Australian Herbarium. Retrieved 15 August 2018.
"Acacia pentadenia Lindl. subsp. pentadenia". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
"Acacia pentadenia. subsp. syntoma". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
"karri Forest". Gondwana Link. Retrieved 15 August 2018.
"Acacia pentadenia". Nindethana. Retrieved 15 August 2018.

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Biology Encyclopedia

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