Hakea decurrens

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Hakea decurrens
H.decurrens subsp. physocarpa
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Hakea
Species:
H. decurrens
Binomial name
Hakea decurrens
Occurrence data from AVH
Pink form

Hakea decurrens, commonly known as bushy needlewood,[2] is a species of shrub or small tree in the family Proteaceae.

Description

Hakea decurrens is a semi-prostrate to erect scrambling bush or small tree 0.4–5 m (1–20 ft) tall. Smaller branches have short densely matted silky hairs, occasionally some quickly becoming smooth. Leaves are needle-shaped, widely spreading horizontally are 1.5–8 cm (0.6–3 in) long and 0.7–1.6 mm (0.03–0.06 in) wide. The smooth leaves are grooved on the underside ending with a sharp point 1–3.5 mm (0.04–0.1 in) long. The

style is 8.5–12.2 mm (0.33–0.48 in) long. A profusion of flowers appear in leaf axils from May to September. The grey woody fruit are broadly egg-shaped 1.8–3.5 cm (0.7–1 in) long and 1–3 cm (0.39–1.2 in) wide covered in distinct warts ending in a prominent beak with two small horns.[2][3][4][5][6]

Taxonomy and naming

Hakea decurrens was first formally described in 1830 by

Supplementum primum prodromi florae Novae Hollandiae.[7]
The
specific epithet (decurrens) is a Latin word, meaning "decurrent" or "prolonged below the point of insertion", referring to the insertion of the leaf on the stem.[5]

In 1996

Journal of the Adelaide Botanic Gardens and the names are accepted by the Australian Plant Census[8]

The main differences are their fruit and hair characteristics on smaller branches.

  • Hakea decurrens subsp. decurrens[9] on younger branches has flattened hairs, quickly becoming smooth and the fruit 1–1.8 cm (0.39–0.71 in) wide;[5][6]
  • Hakea decurrens subsp. platytaenia[10] has persistent raised hairs and fruit 2.6–3.5 cm (1.0–1.4 in) wide;[5][6]
  • Hakea decurrens subsp. physocarpa[11] has flattened hairs, quickly lost. Fruit 1.3–2.5 cm (0.51–0.98 in) wide.[5][6]

Distribution and habitat

The species is native and widespread in

Victoria and Tasmania in Australia. Additionally it is naturalised in South Australia and Portugal
.

Three subspecies are currently recognised:

References

Wikimedia Commons has media related to Hakea decurrens.
  1. ^ "Hakea decurrens". Australian Plant Census. Retrieved 22 June 2022.
  2. ^ a b "Hakea decurrens". VicFlora-Online. Royal Botanic Gardens Victoria. Retrieved 27 February 2019.
  3. ISBN 1-877069-14-0
    .
  4. ISBN 0-7322-0020-2
    .
  5. ^ a b c d e f g h "Hakea decurrens". Flora of South Australia. South Australian Government. Retrieved 27 February 2019.
  6. ^
    ISBN 0-643-06454-0
    .
  7. ^ "Hakea decurrens". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved 2009-08-09.
  8. ^ Barker, William R. (1996). "Novelties and taxonomic notes relating to Hakea (Proteaceae), mainly of eastern Australia". Journal of the Adelaide Botanic Gardens. 17. Retrieved 22 June 2022.
  9. ^ "Hakea decurrens subsp. decurrens". Australian Plant Census. Retrieved 22 June 2022.
  10. ^ "Hakea decurrens subsp. platytaenia". Australian Plant Census. Retrieved 22 June 2022.
  11. ^ "Hakea decurrens subsp. physocarpa". Australian Plant Census. Retrieved 22 June 2022.
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