Tall erect aromatic perennial herb, c. 50-100 cm. Stems sturdy, quadrangular, very finely eglandular pubescent or finely glandular-papillose, little branched, leafy. Leaves regularly ovate or ovate lanceolate, up to 11 x 6 cm, crenate to serrate, broadly cuneate to rounded, acute, finely eglandular pilose mainly on nerves beneath and with numerous sessile oil globules; petiole 15-30 mm. Inflorescence showy, paniculate, of few-flowered lax pedunculate cymes borne in axils of uppermost leaves and leaf-like bracts. Bracts much smaller than calyces. Pedicels 3-6 mm. Calyx 6-8 mm, tubular, straight or almost so, with a very short eglandular or papillose-glandular indumentum; throat oblique; teeth unequal, triangular or narrow triangular, 1/3 to as long as calyx tube. Corolla c. 25 mm, pale yellow to orange-yellow; tube exserted, slender below, gracefully curved, much widened at throat; upper lip ± falcate, deeply bifid; lower lip ± as long as upper. Nutlets c. 2.5 x 1.4 mm, oblong, greenish brown, apically rounded, minutely granular, with a small areole; often only 1 nutlet developing.