Erect to spreading shrub to c. 90 cm high; branches hirsute, non-tuberculate. Leaves alternate, oblong to cordiform, mostly 2–5 mm long, 1–2 mm wide, glabrous, erect and appressed to stems or slightly spreading, plano-convex, acute, margins irregular and prominently tuberculate. Inflorescences 1-flowered. Flowers zygomorphic, sessile; sepals linear-lanceolate, 2–4 mm long, acuminate, imbricate, glabrous outside or hirsute at base, green; corolla 7–10.5 mm long, glabrous outside, villous inside tube, lilac to purple or rarely white, spotted, upper lip 2-lobed; stamens 4, 2 included, 2 slightly exserted, anthers reniform; ovary glabrous, style glabrous. Fruit subcylindric, 2–3.5 mm long, 1–1.5 mm wide, almost dry, glabrous. Flowers mainly Aug.–Jan.
LoM, MuM, Wim, VVP, Gold, GGr. Also SA. Known from Mt Arapiles, the Little Desert, Rushworth and Wedderburn areas, where usually found in mallee scrub on sandy loam soils. .
