Erect, compact to spreading, lignotuberous shrub, 0.4-1(-1.3) m high. Fl. red, Jan or Mar or May or Jul to Nov. Grey sand, sandy loam, lateritic gravel.
Beard’s Provinces: South-West Province.
IBRA Regions: Avon Wheatbelt, Jarrah Forest, Swan Coastal Plain.
IBRA Subregions: Avon Wheatbelt P2, Northern Jarrah Forest, Perth.
Local Government Areas (LGAs): Armadale, Boddington, Brookton, Bunbury, Gosnells, Harvey, Kalamunda, Mundaring, Murray, Northam, Serpentine-Jarrahdale, Swan, Toodyay, Wandering, Waroona.
Habit and leaf form. Shrubs, 0.8–1.5 m high. Branchlets not glaucous. Leaves simple, 20–60 mm long overall. Leaf blade dissected, subpinnatisect, tripinnatisect or bipinnatisect. Leaf lobes 5–30 mm long, 0.5–1 mm wide. Margins revolute, enclosing the lower surface of the leaf blade, forming two grooves with the midvein. Hairs straight.
Inflorescence and floral features. Inflorescence terminal; a raceme. Flowers red, very irregular. Pedicel 10–15 mm long. Perianth 18–20 mm long, glabrous, 4 -partite; lobes free and joined. Stamens 4. Pistil 28–35 mm long, stipitate; stipe 2–3 mm long. Ovary hairy. Styles hairy, red. Pollen presenter oblique.
Fruit features. Fruit oblong or ellipsoidal or subglobose, simple hairy, 15–18 mm long.
Flowering Time. July, or August, or September, or October, or November, or December.
Habitat. Amongst medium trees, or low trees, or tall (sclerophyll) shrubland, or low (sclerophyll) shrubland; in gravelly soil.
Distribution. Western Australia. Western Australian Botanical Province(s): South-west; IBRA Bioregions SW: SWA, AW, and JF. Western Australian native; endemic to Western Australia.
Etymology. wilsonii: Thomas Braidwood Wilson (1792–1843), Surgeon, RN, superintendent of convict ships; explored round King George Sound and disovered the Denmark River: 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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