Scaevola hookeri is a prostrate, perennial herb with stems up to long that root at the nodes and long, rough, upright to soft, thin, weak hairs. The leaves are long, and 2 to 15 mm wide, oval to oblong, both surfaces with occasional flattened, soft, short hairs, margins flat, smooth or toothed on a short stalk. The flowers are borne singly in leaf axils, white or blue with a yellowish throat on a
peduncle long,
bracteoles oblong to elliptic shaped and long. The
corolla is rough on the outside, with occasional soft, weak hairs on the inside and petals up to wide. Flowering occurs usually from November to March and the egg-shaped fruit is about long, wrinkled with short, soft, upright hairs. ==Taxonomy and naming==