Scaevola ramosissima is a scrambling herb up to 40 cm (16 in) high with horizontal stems that are covered in long, upright, stiff simple and glandular hairs.

The leaves are linear to oblong-lance shaped, 2–10 cm (0.79–3.94 in) long, 2–10 mm (0.079–0.394 in) wide, mostly pointed, upper and lower surface hairy, margins smooth or toothed, usually curved under or upward and sessile.

The corolla purple to pale violet, 1.5–2.5 cm (0.59–0.98 in) long, outer surface with stiff, upright hairs, bearded on the inside, wings 1–3 mm (0.039–0.118 in) wide.

Flowering occurs from August to March and the fruit ellipsoid shaped, about 5–6 mm (0.20–0.24 in) long, wrinkled, longitudinal ribs and covered with stiff, upright hairs.

[6] Purple fan-flower grows usually in sandy or gravelly soils in sclerophyll forests and heath from the Blackdown Tableland in Queensland, through New South Wales east of the Blue Mountains and Budawang Range, and in Victoria areas south of the ranges and east of Morwell.