Appearance
''Hakea rostrata'' is a spreading shrub growing to 1–4 m high. Its branchlets and young leaves are hairy with the hairs lying close to the branchlet or leaf. The ascending leaves are terete, 2–15 cm long and 0.8–1.7 mm wide, and are not grooved. The inflorescence 1–10-flowered on a knob-like rachis. The pedicel is 2.5–6.5 mm long, and densely hairy. The perianth is 3.5–5.5 mm long, and hairy at the base. The pistil is 7.8–11.5 mm long, with an oblique disc as pollen presenter. The fruit is roughly at right-angle to stalk, is sigmoid in shape, and 2.2–4.5 cm long and 1.8–3.2 cm wide. It is coarsely wrinkled, sometimes finely black-warted. The beak is reflexed and narrow, 7–14 mm long, appressed against ventral face, with obscure horns. The seed does not occupy the whole valve face and is black with a lighter apex. In Victoria, it flowers from July to November.In Victoria it occurs through a range of heathlands and heathy woodlands in the west and south-west, mostly on sandy soils.
In Victoria, where ''Hakea rostrata'' and ''H. rugosa'' grow together, ''Hakea rostrata'' may be distinguished from ''H. rugosa'' by "its curved rather than straight leaves, curved rather than straight style, its oblique disc rather than a cone as a pollen presenter and its larger fruits."
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