Hakea undulata

Erect shrub, 1–2 m high; lignotuber absent; branchlets glabrescent. Leaves obovate to elliptic, 4–11.5 cm long, 20–65 mm wide, flat, apex acuminate to rounded, margins undulate, with spine-tipped teeth; longitudinal veins 3–7, prominent; reticulate veins prominent. Inflorescence 12–21-flowered; pedicels glabrous; perianth cream-white, glabrous; pistil 3–4 mm long; pollen presenter conical. Fruit obliquely ovate, 2.3–3 cm long, 1–1.4 cm wide, beaked; horns lacking; seed not occupying whole valve face, ± elliptic, 15–18 mm long; wing extending down one side of body (sometimes only partly), notched at base, blackish brown. Flowers Jul.–Oct.