Hakea pachyphylla

Hakea pachyphylla is a shrub in the family Proteaceae which is endemic to the upper Blue Mountains in New South Wales in Australia. Formerly thought to be a Blue Mountains form of Hakea propinqua.

Hakea pachyphylla
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Hakea
Species:
H. pachyphylla
Binomial name
Hakea pachyphylla
Occurrence data from Australasian Virtual Herbarium

Description

Hakea pachyphylla is a non lignotuberous compact to spreading single stemmed shrub growing to 0.3–2 m (1–7 ft) high. The inflorescence consists of 1-7 yellow flowers that appear in axillary clusters in spring. The white main stalk is 0.5–1.2 mm (0.02–0.05 in) long covered with densely covered with short matted hairs. [2] Small branches are ribbed and densely covered with soft mid-red matted hairs quickly becoming smooth or on occasion remain until flowering. Stiff needle-like leaves vary in length between 1–5.5 cm (0.4–2 in) long and 1.1–1.8 mm (0.04–0.07 in) wide with sparse flat hairs but quickly becoming smooth ending with a small point. Flowers from August to October followed by oval shaped fruit with small blunt wart-like protuberances 2.9–3.5 cm (1–1 in) long and 2.3–2.6 cm (0.9–1 in) wide with a short broad beak with obscure or no horns.[2][3]

Taxonomy and naming

Hakea pachyphylla was first formally described in 1827 by Curt Sprengel from an unpublished description by Franz Sieber in Systema Vegetabilium.[1] The specific epithet (pachyphylla) is derived from the Ancient Greek words pachys (παχύς) meaning "thick" and phyllon (φύλλον) meaning "leaf"[4] referring to the thickness of the leaves.[5]

Distribution and habitat

Hakea pachyphylla has a restricted distribution occurring only in the Mount Victoria, Leura, Newnes area in swamp or heath or mallee-heath, occasionally on sandstone.[6]

References
  1. "Hakea pachyphylla". APNI. Australian National Herbarium. Retrieved 8 January 2019.
  2. Barker, G.J.; Haegi L.; Barker W.R. "Hakea pachyphylla Sieber ex Spreng". PlantNET - New South Wales Flora Online. Royal Botanic Gardens & Domain Trust, Sydney Australia. Retrieved 9 March 2013.
  3. Holliday, Ivan. "Hakeas:A Field and Garden Guide". Reed New Holland. ISBN 1-877069-14-0.
  4. Backer, C.A. (1936). Verklarend woordenboek der wetenschappelijke namen van de in Nederland en Nederlandsch-Indië in het wild groeiende en in tuinen en parken gekweekte varens en hoogere planten (Edition Nicoline van der Sijs).
  5. "Hakea pachyphylla". Flora of South Australia:Online. South Australian Government. Retrieved 7 January 2019.
  6. Fairley, Alan; Moore, Philip. Native Plants of the Sydney Region. Jacana Books. ISBN 978-1-74175-571-8.
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