Herbs erect or suberect. Stems ca. 90 cm, much branched, puberulent. Petiole 2-10 mm, densely puberulent; leaf blade ovate-lanceolate to narrowly ovate, 1.5-3 × 1-2 cm, adaxially olive green, densely puberulent, abaxially greenish, densely puberulent, impressed glandular, base rounded to truncate, margin incised-serrate, apex short acuminate to acute. Cymes dichotomous, in upper leaf axils; peduncle 2-10 mm; bracts and bracteoles minute, subulate. Pedicel 1-1.5 mm, puberulent. Calyx campanulate, 5-6 mm, dilated and urceolate in fruit, 11-15-veined, pubescent, mouth regular; teeth lanceolate to triangular-ovate, 1.2-3 mm, posterior 3 slightly longer. Corolla blue, ca. 2.2 cm, puberulent; upper lip straight, 2-4.5 mm; middle lobe of lower lip subcircular, ca. 6 mm wide, base abruptly clawed, margin undulate, apex slightly emarginate; lateral lobes short, indistinct. Nutlets ovoid, slightly flattened, ca. 1.5 × 1.2 mm, distinctly or indistinctly warty. Fl. Sep-Oct, fr. Oct-Nov.
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