Erect shrub to 2 m high; branches sparsely to moderately covered in short hairs. Leaves in whorls of 3, narrowly elliptic to slightly oblong, 5–15 mm long, 1.5–2.5 mm wide, length-to-width ratio 3–6, sparsely to moderately hairy, margin entire, not recurved, apex obtuse with a slight callose point; pedicel short. Bracteoles 1–1.8 mm long. Calyx green, outer surface moderately to densely hairy, tube 2.8–3 mm long, lobes triangular, 1.5–2.5 mm long, c. 1.5 mm wide, lobe-to-tube ratio 0.5–0.9; corolla 12–14 mm long, purple (lavender). Flowers mainly spring.