Prostanthera incisa

Erect, openly branched shrub, 2–2.5 m high, strongly and rather unpleasantly aromatic; branches laterally ridged, moderately to densely covered with short, curled hairs, densely covered with subsessile glands. Leaves ovate, (10–)15–30 mm long, 8–12 mm wide, green, paler below, covered with short, curled hairs basally and along midrib of abaxial surface, densely covered with subsessile glands, base short- to long-attenuate, margin more or less coarsely toothed with teeth directed forward to laterally, apex obtuse; petiole 3–10 mm long. Inflorescence racemose, often leafy near base; bracteoles not persistent, c. 1 mm long and 0.2 mm wide. Calyx 4–5 mm long, tube c. 2 mm long, adaxial lobe c. 2 mm long (slightly enlarged in fruit); corolla pale mauve to mauve, 7–10 mm long; anthers with appendage only slightly extended beyond locule, hence appearing absent, each locule with a basal tuft of narrowly triangular trichomes. Flowers spring.