It is an erect, spindly shrub with linear to narrowly elliptic leaves, and clusters of 12 to 24 white flowers with a yellowish-green or cream-coloured style.

The flowers are arranged in clusters of 12 to 24 on the ends of branches, and are greenish or yellowish in the bud stage, later white with a yellowish green or cream-coloured style, the pistil 7–9.5 mm (0.28–0.37 in) long.

Flowering occurs from August to January and the fruit is a lumpy follicle 9–11 mm (0.35–0.43 in) long.

[2][3] Grevillea viridiflava was first formally described in 2000 by Robert Makinson in the Flora of Australia from specimens collected near Torrington in 1988.

[4] Linear-leaf grevillea in the shrubby understorey of forest in moist places at altitudes of 850–1,000 m (2,790–3,280 ft) in montane areas of south-eastern Queensland and north-eastern New South Wales.