Plants annual, 30-60 cm tall. Stem erect, slender, simple or laxly branched, pubescent in upper part. Leaves alternate; petiole 0.5-2.5 cm; leaf blade elliptic or elliptic-lanceolate, 5-15 × 2.5-4.5 cm, membranous, basal glands absent, abaxially pubescent especially on veins, adaxially strigose, lateral veins 5-7 pairs, base cuneate, gradually attenuate into petiole, margin crenate, apex acuminate or long acuminate. Inflorescences terminal or in upper leaf axils, 1-flowered; peduncles absent. Pedicels 2.5-3.5 cm, bracteate at base; bracts subulate, brown pubescent. Flower blue-purple, 3-3.5 cm deep. Lateral sepals 2, broadly ovate, sparsely puberulent, apex acuminate. Lower sepal obconic or funnelform, narrowed into an incurved, long spur. Upper petal orbicular, puberulent on apical margin, abaxial midvein conspicuously cristate; lateral united petals not clawed, 2-lobed; basal lobes orbicular, small; distal lobes broadly subovate. Anthers acute. Capsule linear, ca. 2.5 cm. Fl. Jun-Jul. 2n = 20.
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A hairy herb. It grows each year from seed. It grows 30-60 cm tall. The leaves are alternate. They are oval to sword shaped and taper to the point. They have rounded teeth along the edge. They are hairy on both surfaces. The flowers occur singly. They are purple and have a long spur. The spur curves inwards.
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