Herbs annual. Stems erect, (2.5-)5-30(-35) cm, densely white pubescent, glandular puberulent. Petiole 1-3 cm, densely white pubescent; lower and mid stem leaf blades ovate, oblong-elliptic, to lanceolate, 0.8-4 × 0.7-3.5 cm, thin papery, adaxially olive green, puberulent, abaxially greenish, glandular pubescent, yellow glandular, base broadly cuneate to rounded, margin remotely 3-5-serrate or subentire, apex obtuse. Cymes in axils of upper leaves, (1-)2.5-6.5 cm; peduncle 0-5 mm, densely white pubescent, glandular puberulent; bracts linear, 2.5-3 mm. Calyx tubular, 3.5-4 × 1-1.2 mm, bottle-shaped and 4.5-6.5 × ca. 2 mm in fruit, densely white patent villous, yellow glandular, throat oblique; posterior teeth triangular to oblong-triangular, 0.7-1.1 mm, apex acute to acuminate, middle tooth longest; anterior teeth 2, narrowly lanceolate, apex acuminate. Corolla purplish, 4.5-6 mm, pilose; tube slender, ca. 2.5 × 0.7 mm, dilated into throat ca. 1 × 1.2 mm; upper lip straight, ca. 0.8 mm; lower lip almost 2 × as long as upper lip, spreading, lobed; middle lobe cordate, ca. 1.1 × 1.3 mm, reflexed, margin undulate, apex emarginate; lateral lobes semicircular, ca. 0.3 × 0.7 mm. Nutlets dark brown, oblong-ovoid, ca. 1.5 × 0.7 mm, adaxially obtusely ribbed, minutely tuberculate. Fl. and fr. Jun-Jul.
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