Herbs, perennial, 50-120 cm tall. Rhizomes short. Stems erect, often purplish, terete, simple or few branched, glabrous. Basal leaves petiolate; petiole narrowly winged; blade spatulate, up to 8 cm; cauline leaves sessile or shortly petiolate, blade obovate-oblong to obovate-lanceolate or elliptic, 3.5-7 × 1.5-2(-3) cm, papery, both surfaces glabrous, base cuneate, margin with glandular denticles, apex obtuse or acute. Racemes terminal, lax, one-side-oriented; bracts similar to leaves, sessile; pedicels compressed, 4-7 mm, puberulent; bracteoles 2 at middle of pedicels. Hypanthium oblong, 3-4 mm, puberulent; calyx lobes linear-lanceolate, 9-12 × ca. 1 mm, margin glandular-denticulate or also ciliate. Corolla pale blue or rose, 24-30 mm; lobes of upper lip slightly ascending, linear, ca. 15 mm, back sparsely villous along midvein; lobes of lower lip spreading, oblong-lanceolate, ca. 8 mm. Filament tube ca. 11 mm, glabrous; anther tube ca. 6 mm, back sparsely villous at apex, lower 2 anthers barbate at top. Capsule oblong, ca. 6 × 4 mm. Seeds ellipsoid. Fl. and fr. Aug-Oct.
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