Hakea cygna
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| Hakea cygna | ||||||||||||||||
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| Hakea cygna Lamont [1][2] |
Hakea cygna is a Western Australian shrub. [1]
The shrubby species is nonsprouting, erect, 0.4 to 2.0 m, with branchlets that become densely haired in the flowering period. Flowering will occur at a time between July and October, the inflorescence is compacted on racemes, 10 - 14 creamy or white flowers; these arrangements are upright appearing at the now silky terminal branchlets. Pedicel - 2–5 mm long; tepal - 4–6 mm; pistil 5–7 mm.
The leaves are simple, and narrow or obovate; they are thick, glabrous, 20 - 75 mm long, 1.2 - 9 mm wide; flat or nearly circular in cross section. The margin is complete and has a prominent venation; longitudinal veins may be three and are indistinct.
Fruit and seeds will appear on short stalks, and are ovate in form; the fruit is elliptic, 20–37 mm long, 12–20 mm wide, with a slender tip. Seed tending to triangular and is winged - pale brown and darkly striated.
[edit] Distribution
It is widely distributed especially to a corridor of the eastern regions of the southwest botanical province, from the Esperance Plains to the northern biogeographic regions. Stony, gravelly loams or sands, particuarly laterite sands.[3] It also extends into the Eremaean province, and to the region around the Swan River - it is from here that the name was derived, cygna for Swan.
[edit] Subspecies
There are currently two subspecies:
- (Variant) Hakea cygna Lamont subsp. cygna: Swan Fruit Hakea
widespread, the entire population excepting that below. It is of Least Concern, at least with regard to extinction.[1]
- Hakea cygna subsp. needlei Lamont [2] :
the leaves might be narrower, needle-like; pistils, tepals slightly shorter. It is found in a small population near Lake King in the Esperance Plains region. The conservation status is that of a threatened, though poorly known species. [4]
[edit] References
- ^ a b c Hakea cygna. FloraBase. Department of Environment and Conservation, Government of Western Australia.
- ^ a b FloraBase cite: J.Linn.Soc.,Bot. 94:439-440,Fig.4c (1987)
- ^ Lamont, in B.Lamont et al. , J. Linn. Soc., Bot. 94: 439 (1987) ((1987)). Hakea cygna. Flora of Australia–Online. ABRS. Retrieved on 2007-08-29. “Data derived from Flora of Australia Volumes 16 (1995), 17A (2000) and 17B (1999),”
- ^ Florabase Conservation codes P1: Priority One - Poorly Known (Threatened and unsurveyed)
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