Stems numerous, erect or ascending, 20-30 cm tall, puberulent, glandular hairy. Leaves sometimes subsessile upward; petiole less than 1 cm, rarely to 1.5 cm; leaf blade ovate to ovate-cordate, 1-2.5 × 0.8-2(-3) cm, densely pubescent, glandular, base cordate, rarely sub-truncate to rounded, margin crenate, apex obtuse to acute. Cymes widely spaced; peduncle 1-5 mm; bracts small, linear-lanceolate, pubescent. Calyx tubular-campanulate to subtubular, slightly dilated at apex, 8-9 mm, 12-15-veined, densely pubescent, glandular, throat pilose annulate; upper lip 3-toothed; lower calyx teeth 2, shorter, narrowly ovate to oblong-ovate, apex acute. Corolla blue, 1.6-1.8 cm, pubescent; tube exserted, dilated at apex; middle lobe of apparent upper lip emarginate or 2-lobed, lateral lobes broadly elliptic; lobes of apparent lower lip sub-circular. Anterior stamens exserted. Nutlets oblong-ellipsoid, ca. 2 mm. Fl. Jun-Aug.
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