Prostanthera walteri

Sprawling shrub, 1–2 m high; branches often forming a tough wiry entanglement, c. terete, densely pilose to appressed-tomentose, glandular. Leaves ovate to slightly rhombic, (10–)18–26(–38) mm long, 5–15(–17) mm wide, 1.4–2.5 times as long as wide, indumentum like that of stems, sometimes apparently glabrous above, grooved above, base obtuse, subacute to cuneate, margin entire, recurved, apex obtuse; petiole 2–5(–8) mm long. Flowers appearing axillary; bracteoles 4–6.5 mm long; calyx 10–12 mm long, striate, tube 4–5 mm long, lobes 3–6(–7) mm long; corolla (15–)18–26 mm long, blue-green, rarely green-yellow, prominently purple-veined, tube 12–16 mm long; anther appendage absent. Flowers summer.