Grevillea parviflora is a dense, spreading to erect shrub that typically grows to a height of 1 m (3 ft 3 in) or less and sometimes forms a rhizome.

The flowers are white with rust-coloured hairs, the style sometimes turning red with age, the pistil usually 4.5–6.5 mm (0.18–0.26 in) long.

[7] In 2000, Robert Owen Makinson described two subspecies of G. parviflora in the Flora of Australia, and the names are accepted by the Australian Plant Census: This grevillea grows heath or shrubby or heathy woodland in the Sydney region.

Subspecies parviflora is mostly found west and south of Sydney between Camden, Appin and Cordeaux Dam with disjunct populations near Putty, Cessnock and Cooranbong.

Subspecies supplicans occurs north-west of Sydney near Arcadia, Maroota and Marramarra National Park.