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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 yorkrakinensis
Subspecies: A. y. subsp. acrita – A. y. subsp. yorkrakinensis
Name

Acacia yorkrakinensis C.A.Gardner, 1942
Synonyms

Racosperma yorkrakinense (C.A.Gardner) Pedley

Distribution
Native distribution areas:
Acacia yorkrakinensis

Continental: Australasia
Regional: Australia
Western Australia

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

Gardner, C.A., 1942. Journal of the Royal Society of Western Australia xxvii. 174.

Links

Govaerts, R. et al. 2020. Acacia yorkrakinensis in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2020 Aug 19. Reference page.
International Plant Names Index. 2019. Acacia yorkrakinensis. Published online. Accessed: Aug 19 2019.
Tropicos.org 2019. Acacia yorkrakinensis. Missouri Botanical Garden. Published on the internet. Accessed: 2019 Aug 19.
Catalogue of Life: 2021 Annual Checklist
Acacia yorkrakinensis – Taxon details on World Wide Wattle.

Vernacular names

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

Description

The spreading often dense shrub typically grows to a height of 1 to 4 metres (3 to 13 ft)[1] and branches from near ground level. The grey-green phyllodes have a linear to linear-elliptic to narrowly oblong-elliptic shape and are straight to shallowly curved. Phyllodes have a length of 3 to 16 cm (1.2 to 6.3 in) and a width of 3 to 13 mm (0.12 to 0.51 in) with red to brown margins with numerous, fine, closely parallel veins.[2] It blooms from July to September and produces yellow flowers.[1] The inflorescences form on one to four headed racemes. The flower spikes have a length of 10 to 22 mm (0.39 to 0.87 in) and a diameter of 5 to 7 mm (0.20 to 0.28 in). The seed pods that form later have a linear shape and raised between the seeds inside. the pods have a length of around 11 cm (4.3 in) and a width of 5 to 5.5 mm (0.20 to 0.22 in). the glossy black-brown seeds inside have an oblong-elliptic shape.[2]
Taxonomy

The species was first formally described by the botanist Charles Austin Gardner in 1942 as part of the work Contributiones Florae Australiae Occidentalis as published in the Journal of the Royal Society of Western Australia. It was reclassified as Racosperma yorkrakinense by Leslie Pedley in 2003 and thentransferred back to the Acacia genus in 2006.[3]

The specific epithet is in reference to Yorkrakine, the town where the type specimen was collected.[4]

There are two subspecies;

Acacia yorkrakinensis subsp. acrita described by R.S.Cowan and Bruce Maslin in 1995.[5]
Acacia yorkrakinensis C.A.Gardner subsp. yorkrakinensis.[6]

Distribution

It is endemic to an area in the Whearbelt and Goldfields regions of Western Australia where it is found on sandplains, rocky rises and flats growing in sandy, loamy, clay or gravelly soils.[1] The species is found between Wubin in the north and extends in a south easterly direction down to around Peak Charles National Park where it is a part of mallee heath and open shrubland communities.[2]
See also

List of Acacia species

References

"Acacia yorkrakinensis". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
"Acacia yorkrakinensis". WorldWideWattle. Western Australian Herbarium. Retrieved 5 December 2018.
"Acacia yorkrakinensis C.A.Gardner". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 5 December 2018.
"Botanical name Acacia yorkrakinensis subsp. acrita Cowan & Maslin, Nuytsia 10: 60 (1995)" (PDF). WorldWideWattle. Western Australian Herbarium. Retrieved 5 December 2018.
"Acacia yorkrakinensis subsp. acrita". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
"Acacia yorkrakinensis subsp. yorkrakinensis". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.

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Biology Encyclopedia

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