Grevillea myosodes is a spreading shrub that typically grows to high and up to wide and forms a lignotuber. The leaves are obliquely elliptic, sometimes curved, long, wide and densely covered with fine silky hairs. The flowers are arranged in branched clusters, each branch cylindrical and long, the flowers cream-coloured to pale yellow, the pistil long. Flowering occurs from May to July and the fruit is a flattened, elliptic follicle long.