Hakea corymbosa
| Hakea corymbosa | |
|---|---|
| |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Proteales |
| Family: | Proteaceae |
| Genus: | Hakea |
| Species: | H. corymbosa
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| Binomial name | |
| Hakea corymbosa | |
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| Occurrence data from Australasian Virtual Herbarium | |
Hakea corymbosa, commonly known as the cauliflower hakea [2] is a plant of the family Proteaceae which is endemic to the south-west of Western Australia. It grows as a shrub to 2 metres (6 ft 7 in) in height with prickly foliage and green-yellow flowers that appear over winter (May to September). It grows in heath or woodland, on sandy or lateritic soils.
Description
Hakea corymbosa is a non lignotuberous erect multi-branched shrub growing to 0.5 to 2 metres (1.6 to 6.6 ft) high and 2.5–3 m (8–10 ft) wide. The young shoots are referred to as "water canes", when mature they develop into a new cluster of foliage. The shrub becomes extremely dense and prickly, the foliage appearing like clusters of "clouds". The narrow waxy leaves are 2.5 to 12 cm (1.0 to 4.7 in) long and 0.2 to 0.8 cm (0.079 to 0.315 in) wide on lower parts but whorled near the flowers. Leaves are alternately arranged along the stems with a distinct centre vein on the upper side and three on the underside ending in a sharp point. The inflorescence consists of 12-18 flowers appearing in profusion in leaf axils. The pedicel is 3.5–5 mm (0.1–0.2 in) long and smooth. The perianth is a pale yellow-green. Woody fruit are broadly egg-shaped 2 to 3 centimetres (0.8 to 1.2 in) long and 1.5 cm (0.59 in) wide ending in a short sharp point without a beak. The winged seed measures 12–17 mm (0.47–0.67 in) long and 6.5–11 mm (0.26–0.43 in) wide. [3][4][5][6][7]
Taxonomy
The species was first formally described by the botanist Robert Brown in 1830 as part of the work Proteaceas Novas. Supplementum primum prodromi florae Novae Hollandiae.[8] The type specimen had been collected at King George Sound by William Baxter in 1823.[9] The specific name is derived from the flowers being arranged in corymbs.[5] A lignotuberous form with bright yellow flowers found north of Perth was classified as a separate species, Hakea eneabba.[10]
Distribution and habitat
The shrub is native to the Great Southern, southern Wheatbelt and Goldfields-Esperance regions of Western Australia from Williams in the west, Albany in the south to Kondinin in the north and Cape Arid in the east. It is found in acid to slightly alkaline,[11] sandy soils over or around laterite or granite,[3] in heath or woodland.[6]
Cultivation
Hakea corymbosa can be grown in a sunny location in most soil types, preferring temperate climates receiving over 400 mm (16 in) rainfall a year.[2] Plants in a shady spot tend to have elongated growth.[11] The flowers attract birds to the garden.[5] It can be grown as a windbreak, hedge or for erosion control.[6] Propagation is by seed, preferably gathered using gloves due to the prickliness of the foliage.[12]
References
- ^ "Hakea corymbosa". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved 5 May 2013.
- ^ a b Holliday, Ivan. Hakeas: A Field and Garden Guide. Reed New Holland. p. 48. ISBN 1-877069-14-0.
- ^ a b "Hakea corymbosa'". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
- ^ Young, J A (2000). "Hakeas of Western Australia:Botanical District of Roe and Eyre". J A Young. ISBN 0-9585778-1-1.
- ^ a b c "Hakea corymbosa". Growing Native Plants. Australian National Botanic Gardens. Retrieved 5 May 2013.
- ^ a b c Young, J A. "Hakeas of Western Australia:A Field and Identification Guide". J A Young. ISBN 0-9585778-2-X.
- ^ "Hakea corymbosa". Flora of Australia Online. Department of the Environment and Heritage, Australian Government.
- ^ "Hakea corymbosa R.Br". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 12 October 2018.
- ^ Brown, Robert (1830). Proteaceas Novas. Supplementum Primum Prodromi Florae Novae Hollandiae. London, United Kingdom: Richard Taylor. p. 28.
- ^ "Hakea corymbosa". Flora of Australia Online. Department of the Environment and Heritage, Australian Government.
- ^ a b Elliot, Rodger W.; Jones, David L.; Blake, Trevor (1990). Encyclopaedia of Australian Plants Suitable for Cultivation: Vol. 5. Port Melbourne: Lothian Press. p. 197. ISBN 0-85091-285-7.
- ^ Wrigley, John; Fagg, Murray (1991). Banksias, Waratahs and Grevilleas. Sydney, New South Wales: Angus & Robertson. p. 368. ISBN 0-207-17277-3.
External links
- "Hakea corymbosa". Flora of Australia Online. Department of the Environment and Heritage, Australian Government.
