Hakea cygna

taxobox
name = "Hakea cygna"
regnum = Plantae
unranked_divisio = Angiosperms
unranked_classis = Eudicots
ordo = Proteales
familia = Proteaceae
subfamilia = Grevilleoideae
genus = "Hakea"
species = "H. cygna"
binomial = "Hakea cygna"
binomial_authority = Lamont FloraBase|name="Hakea cygna"|id=2153] FloraBase cite: J.Linn.Soc.,Bot. 94:439-440,Fig.4c (1987)] |

"Hakea cygna" is a Western Australian shrub.

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.

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, particularly laterite sands. [cite web | url = http://www.anbg.gov.au/abrs/online-resources/flora/stddisplay.xsql?pnid=3324 | title = Hakea cygna | accessdate = 2007-08-29 | author = Lamont, in B.Lamont et al. , J. Linn. Soc., Bot. 94: 439 (1987) | authorlink = Lamont | coauthors = | date = | year = (1987) | work = Flora of Australia–Online | publisher = ABRS | quote = Data derived from Flora of Australia Volumes 16 (1995), 17A (2000) and 17B (1999), ] 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.

ubspecies

There are currently two subspecies:
*(Variant) "Hakea cygna" Lamont subsp. "cygna": Swan Fruit Hakeawidespread, the entire population excepting that below. It is of Least Concern, at least with regard to extinction.
*"Hakea cygna" subsp. "needlei" Lamont : 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. [Florabase [http://florabase.calm.wa.gov.au/conservationtaxa Conservation codes] P1: Priority One - Poorly Known (Threatened and unsurveyed)]

References