The leaves are arranged mostly in whorls of three, about 1.5–3.5 mm (0.059–0.138 in) long, on upright, slender stems about 1–2 mm (0.039–0.079 in) long, slightly bent backwards and a sharp tip at the apex.

The flowers are borne in leaf axils on a pedicel, they may be white to pale lilac, with yellow, crimson or purple dots on the lower petals of the throat.

Flowering occurs from October to December and most likely pollinated by insects, the fruit is a nutlet with furrowed veins on the surface.

[2] Westringia angustifolia was first formally described in 1810 by Robert Brown and the description was published in Prodromus Florae Novae Hollandiae et Insulae Van Diemen.

[4] Scabrous westringia is an uncommon species in Tasmania, it is found mainly in dry, shrubby understorey and rocky hillsides often associated with riverbanks, on dolerite soils, at altitudes of 300–900 m.[2][5]