Hakea amplexicaulis

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Prickly hakea
Hakea amplexicaulis gnangarra.jpg
Hakea amplexicaulis near Mundaring Weir, Western Australia
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Hakea
Species:
H. amplexicaulis
Binomial name
Hakea amplexicaulis
Hakea amplexicaulisDistMap6.png
Occurrence data from Australasian Virtual Herbarium
Synonyms

Hakea amplexicaulisR.Br. var. amplexicaulis
Hakea amplexicaulis var. latifolia Meisn.
Hakea triformisLindl.
Hakea amplexicaulis var. angustifoliaMeisn.

Contents

fruit Hakea amplexicaulis fruit.jpg
fruit
stem-clasping leaf base Hakea amplexicaulis leaf base.jpg
stem-clasping leaf base

Hakea amplexicaulis, commonly known as prickly hakea, [2] is a shrub endemic to south west Western Australia. An attractive small shrub with unusual stem clasping, sharply serrated foliage and a profusion of sweetly scented variable coloured flowers from late winter to spring.

Description

Hakea amplexicaulis is an upright, straggly shrub growing to 1 to 3 metres (3 to 10 ft) high with smooth smaller branches and forms a lignotuber. The leaves are narrowly egg-shaped or totally egg-shaped, 3–18 cm (30–200 mm) long and 20–65 mm (0.8–3 in) wide. The stem clasping leaves are sharply toothed with 12–30 2–6 mm (0.08–0.2 in) long teeth on each side, smooth, bluish-green with a powdery film. The inflorescence has 36-42 large, rounded and strongly scented flowers on a short stem. Clusters of white, cream, pink or red flowers appear in leaf axils; they may become pink or a reddish hue as they age. The pedicel is 6–14 mm (0.2–0.6 in) long. The perianth is smooth 4–6 mm (0.2–0.2 in) long, white occasionally with a pink tinge and the style is smooth. The fruit are egg-shaped 3–3.5 cm (1–1 in) long and 12–15 mm (0.5–0.6 in) wide, smooth with a few sharp spines, and taper to a blunt beak. Flowering occurs from August to November. [2] [3] [4] [5]

Taxonomy and naming

The species was first formally described in 1810 by Robert Brown and the description was published in Transactions of the Linnean Society of London . [1] The specific epithet (amplexicaulis) is derived from the Latin words amplexus meaning "encircled" or "embraced" [6] :142 and caulis meaning "stem", [6] :142 referring to the stem-clasping habit at the base of the leaf. [4] [7]

Distribution and habitat

Hakea amplexicaulis is found in jarrah forests from Perth to Albany. This species grows in clay, loam and gravelly acidic soils in a well-drained site in sun or partial shade. A showy shrub, good for wildlife habitat and is moderately frost hardy. [3] [4]

Conservation status

Hakea amplexicaulis is classified as "not threatened" by Western Australian government Department of Parks and Wildlife. [2]

Related Research Articles

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References

  1. 1 2 "Hakea amplexicaulis". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved 2008-08-23.
  2. 1 2 3 "Hakea amplexicaulis". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  3. 1 2 Holliday, Ivan (2005). Hakeas: A Field and Garden Guide. Reed New Holland.
  4. 1 2 3 Young, J A Young (2006). Hakeas of Western Australia:A Field and Identification Guide. J A Young. ISBN   0-9585778-2-X.
  5. Barker, Robyn M.; Haegi, Laurence A.; Barker, William R. (1999). Wilson, Annette (ed.). "Flora of Australia" Volume 3 Hakeas to Dryandra. ABRS. ISBN   0-643-06454-0.
  6. 1 2 Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press.
  7. "Hake amplexicaulis". Flora of South Australia:Online. South Australian Government. Retrieved 3 February 2019.