Hakea costata Meisn. Ribbed Hakea
Lehm., Pl.Preiss. 1:575-576 (1845)

Conservation Code: Not threatened
Naturalised Status: Mixed (Native in Part of Range, Naturalised Elsewhere)
Name Status: Current

Brief Description
Amanda Spooner, Monday 23 June 2003

Erect, non-lignotuberous shrub, 0.3-2 m high. Fl. white/cream, Aug to Oct. White, yellow or red sand over laterite or limestone.

Distribution

Beard’s Provinces: South-West Province.

IBRA Regions: Avon Wheatbelt, Geraldton Sandplains, Jarrah Forest, Swan Coastal Plain.

IBRA Subregions: Avon Wheatbelt P1, Avon Wheatbelt P2, Dandaragan Plateau, Geraldton Hills, Lesueur Sandplain, Northern Jarrah Forest, Perth.

IMCRA Regions: Central West Coast.

Local Government Areas (LGAs): Carnamah, Chapman Valley, Chittering, Coorow, Dandaragan, Gingin, Greater Geraldton, Irwin, Joondalup, Mingenew, Moora, Northampton, Perth, Swan, Three Springs, Victoria Plains, Wanneroo.

Scientific Description
Chris Hollister, Nicholas Lander and Kevin Thiele, Friday 20 July 2018

Shrubs, 0.3-2 m high; branchlets hairy. Leaves alternate, 8-16 mm mm long, 1-4 mm mm wide, glabrous; lamina flat, clearly widest above the middle or more or less the same width throughout, entire. Inflorescences axillary, white; pedicels 2-3 mm long. Perianth 3-5 mm long, glabrous; ovary glabrous; pistil 6-8 mm long, pollen presenter conical, style glabrous. Follicles 8-10 mm long, 6-8 mm wide, corky tetrahedral projections (on external surfaces of fruit) absent; seed 6.7-9.3 mm long (including wing), 4.5-5 mm wide, the wing discontinuous, marginal, extending ± unequally down each lateral side. Flowers in July, August, September or October. Occurs in the South-west (SW) Botanical Province(s), in the Geraldton Sandplains (GS), Swan Coastal Plain (SWA), Avon Wheatbelt (AW) or Jarrah Forest (JF) IBRA subregion(s).