Erect shrub, 0.3-5 m high. Fl. green-yellow-cream, Feb to Mar or Jun to Dec. Yellow, red orange-brown sand, gravel. Sandplains.
Habit and leaf form. Shrubs, 1–3 m high. Branchlets not glaucous. Leaves simple, 10–120 mm long overall. Leaf blade 1–9 mm wide, undissected, subterete or flat, obovate or linear. Margins entire, flat. Hairs straight.
Inflorescence and floral features. Inflorescence terminal (rarely axillary); a raceme. Flowers cream or yellow, very irregular. Pedicel 1–4 mm long. Perianth 3–4 mm long, simple-hairy, 4 -partite; lobes all free. Stamens 4. Pistil 4–6 mm long, stipitate; stipe 0.2–0.5 mm long. Ovary glabrous. Styles glabrous, cream or yellow. Pollen presenter conical.
Fruit features. Fruit smooth, obovoid, glabrous, not viscid, 5–8.5 mm long.
Flowering Time. August, or September, or October, or November, or December.
Habitat. Amongst tall (sclerophyll) shrubland, or low (sclerophyll) shrubland; in gravelly soil, or sand.
Distribution. Western Australia. Western Australian Botanical Province(s): Eremaean and South-west; IBRA Bioregions ER: CAR, YAL, MUR, GVD, and COO; IBRA Bioregions SW: GS and AW. Western Australian native; endemic to Western Australia.
subsp. didymobotrya: Leaves unifacial, subterete to linear.
subsp. involuta: Leaves dorsiventral, obovate to elliptic.
Etymology. didymobotrya (Gk): didymos double, twin + botrys bunch of grapes, bot. raceme (refers to the paniculate flower clusters 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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