Hakea corymbosa

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Hakea corymbosa
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Hakea
Species:
H. corymbosa
Binomial name
Hakea corymbosa
H. corymbosa flowers and foliage

Hakea corymbosa, commonly known as the cauliflower hakea, is a plant of the family Proteaceae which is endemic to the south-west of Western Australia. It grows as a shrub to 2 m high 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

The erect shrub typically grows to a height of 0.5 to 2 metres (1.6 to 6.6 ft) and has no lignotuber.[2] The bark is smooth and grey.[3] It blooms between May and September and has yellow and green axillary flower clusters which are followed by woody seed capsules that are 2 to 3 centimetres (0.8 to 1.2 in) long and about 1.5 cm (0.59 in) wide. The prickly smooth 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,[2][4] and are alternately arranged along the stems.[4]

The winged seed measures 12–17 mm long and 6.5–11 mm wide.[2]

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.[5] The type specimen had been collected at King George Sound by William Baxter in 1823.[6] The species name is derived from the flowers being arranged in corymbs.[4] A lignotuberous form with bright yellow flowers found north of Perth was classified as a separate species, Hakea eneabba.[7]

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,[8] sandy soils over or around laterite or granite,[2] in heath or woodland.[3]

Cultivation

H. corymbosa can be grown in a sunny location in most soil types, preferring temperate climates receiving over 400 millimetres (16 in) rainfall a year.[9] Plants in a shady spot tend to have elongated growth.[8] The flowers attract birds to the garden.[4] It can be grown as a windbreak, hedge or for erosion control.[3] Propagation is by seed, preferably gathered using gloves due to the prickliness of the foliage.[10]

References

  1. ^ "Hakea corymbosa". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved 5 May 2013.
  2. ^ a b c d "Hakea corymbosa'". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  3. ^ a b c Young, Jennifer A. (2000). Hakeas of Western Australia:Botanical Districts of Roe and Eyre. J A Young. pp. 46–47. ISBN 0-9585778-1-1.
  4. ^ a b c d "Hakea corymbosa". Growing Native Plants. Australian National Botanic Gardens. Retrieved 5 May 2013.
  5. ^ "Hakea corymbosa R.Br". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 12 October 2018.
  6. ^ Brown, Robert (1830). Proteaceas Novas. Supplementum Primum Prodromi Florae Novae Hollandiae. London, United Kingdom: Richard Taylor. p. 28.
  7. ^ *46061 "Hakea eneabba". Flora of Australia Online. Department of the Environment and Heritage, Australian Government. {{cite web}}: Check |url= value (help)
  8. ^ 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.
  9. ^ Holliday, Ivan. Hakeas: A Field and Garden Guide. Reed New Holland. p. 48. ISBN 1-877069-14-0.
  10. ^ Wrigley, John; Fagg, Murray (1991). Banksias, Waratahs and Grevilleas. Sydney, New South Wales: Angus & Robertson. p. 368. ISBN 0-207-17277-3.

External links