Prostanthera monticola

Sprawling, open shrub, 0.3–2 m high; branches subterete to subquadrangular, often c. 8-ridged on younger growth, red, hairy, densely so on upper internodes and nodes; hairs appressed. Leaves ovate to elliptic, 15–50 mm long, 5–13 mm wide, 3–6.7 times as long as wide, glabrous beneath, glabrous to sparsely tomentose above, coriaceous, upper surface grooved, base cuneate to subacute, margin entire, recurved, apex obtuse; petiole (1.5–)2–5 mm long. Flowers appearing axillary; bracteoles 10–18 mm long, equal to or exceeding calyx. Calyx 10–15 mm long, green, tube 5–6 mm long, lobes 6–9 mm long; corolla 30–35 mm long, pale blue-green to grey-green, with dark purple-blue veins, tube 18–20 mm long; anther appendage absent. Flowers summer.