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, Thursday 7 February 2019

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).