Erect, non-lignotuberous shrub, 1-4.5 m high. Fl. red/red-pink, Jun to Sep. White or grey sand. Coastal dunes, limestone rocks.
Beard’s Provinces: South-West Province.
IBRA Regions: Geraldton Sandplains, Swan Coastal Plain.
IBRA Subregions: Dandaragan Plateau, Geraldton Hills, Lesueur Sandplain, Perth.
IMCRA Regions: Central West Coast.
Local Government Areas (LGAs): Carnamah, Cockburn, Coorow, Dandaragan, Greater Geraldton, Irwin.
Habit and leaf form. Shrubs, 1–4.5 m high. Branchlets not glaucous. Leaves simple, 30–75 mm long overall. Leaf blade 3–20 mm wide, undissected, flat, obovate or obtrullate (narrowly). Margins entire, flat or recurved (occasionally revolute), exposing the lower surface of the leaf blade. Hairs straight.
Inflorescence and floral features. Inflorescence axillary, or terminal; a raceme. Flowers yellow or orange or red, very irregular. Pedicel 4–5 mm long. Perianth 7–10 mm long, simple-hairy, 4 -partite; lobes free and joined. Stamens 4. Pistil 22–28 mm long, stipitate; stipe 3–5 mm long. Ovary glabrous. Styles glabrous, yellow or red. Pollen presenter oblique.
Fruit features. Fruit rugose or granulose, oblong or ovoid, 11–15 mm long.
Flowering Time. June, or July, or August, or September, or October.
Habitat. Amongst medium trees, or low trees; in gravelly soil, or sand, or loam; occupying limestone cave entrance, lateritic sandplain, limestone swamp flats.
Distribution. Western Australia. Western Australian Botanical Province(s): South-west; IBRA Bioregions SW: GS and SWA. Western Australian native; endemic to Western Australia.
Etymology. olivacea (L): oliva an olive, an olive tree + aceus (adj. suffix) (refers to the leaf colour: Grevillea).
Descriptions were generated using DELTA format and DELTA software: Dallwitz (1980) and Dallwitz, Paine and Zurcher (1993 onwards, 1995 onwards, 1998)
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