Hakea cygna
| Hakea cygna | |
|---|---|
| |
| Hakea cygna subsp. cygna near Tathra National Park | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Proteales |
| Family: | Proteaceae |
| Genus: | Hakea |
| Species: | H. cygna
|
| Binomial name | |
| Hakea cygna Lamont[1] | |
| |
| Occurrence data from Australasian Virtual Herbarium | |
Hakea cygna, commonly known as the swan hakea,[2] is usually a dense shrub endemic to Western Australia with creamy-white upright flowers appearing from July to August.
Description
Hakea cygna is an upright non-
racemes, appearing upright and singly in leaf axils. The cream-white pedicels are smooth, rarely with soft short flattened hairs. The perianth a cream-white and the style is 5.5–7 mm (0.22–0.28 in) long. The oval to egg-shaped fruit are 2.1–3.7 cm (0.83–1.5 in) long and 1.2–2 cm (0.47–0.79 in) wide growing at an angle on a short thick stalk. The fruit is barely beaked but has a short prominent point. The seed are pale brown with darker streaks are broadly egg-shaped to almost triangular or circular and 12–20 mm (0.47–0.79 in) long. Flowers appear either from May to June or August to September.[2][3][4][5][6]
Taxonomy and naming
Hakea cygna was first formally described by
referring to the shape of the fruit believed to resemble that of a swan. Two subspecies of Hakea cygna have been recognised.- Hakea cygna subsp. cygna has flat, thick, linear to narrowly egg-shaped leaves 2.5–9 mm (0.098–0.35 in) wide. Restricted to an area south of Lake King.
- Hakea cygna subsp. needlei has variable leaves either narrowly linear, needle-shaped or triangular in cross-section and 1.2–2 mm (0.047–0.079 in) wide.
Distribution and habitat
Hakea cygna is widely distributed from
Cape Arid. It grows in heath or mallee-heath on gravelly loams, sandy loams, white yellow or grey sand, often over laterite.[3]
- Subspecies cygna is widespread from
- Subspecies needlei has a restricted distribution with scattered populations just south of Lake King and in the
Conservation status
Hakea cygna subsp. needlei is classified as "Priority Two" by the Western Australian Government Department of Parks and Wildlife[5] meaning that it is poorly known and from only one or a few locations.[8]
References
- ^ a b "Hakea cygna". APNI. Australian National Herbarium. Retrieved 26 February 2019.
- ^ ISBN 0-9585778-2-X.
- ^ )
- ISBN 1-877069-14-0.
- ^ a b "Hakea cygna". FloraBase. Western Australian Government. Retrieved 26 February 2019.
- ^ Archer, William (9 March 2012). "Hakea cygna". Esperance Wildflowers. Retrieved 26 February 2019.
- ^ Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 248.
- ^ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 26 February 2019.