Hakea grammatophylla is a small variable shrub growing to a height of sometimes erect but sparsely branched. The branchlets are either thickly or sparingly covered with flattened hairs becoming more or less smooth at flowering. The leaves are long, flat, and narrowly egg-shaped long, wide with 5–9 distinct veins. The inflorescence consists of 100–150 red to deep pink scented blooms in a raceme on a stem long that is covered with short, softmatted hairs. The pedicel is smooth, perianth bright pink and smooth and the pistil long. Flowering occurs mostly from March to August. The fruit are narrow and fairly smooth about long tapering to a point.