Plants annual, 15-30 cm tall. Stem erect, simple or branched, in upper part subtetragonous, glabrous. Leaves alternate or subverticillate in upper part of stem, lower leaves petiolate, upper leaves sessile; petiole with 2 stipitate globose basal glands; leaf blade ovate-lanceolate, (3-)6-12 cm, glabrous, lateral veins 5-7 pairs, base cuneate or acute, margin coarsely serrate, apex acuminate. Inflorescences in upper leaf axils, racemose-subcorymbose, few flowered; peduncles erect. Pedicels slender, bracteate at base; bracts narrowly lanceolate, glandular, apex acute. Flowers pinkish. Lateral sepals 2, green, obliquely ovate, apex mucronulate. Lower sepal broadly funnelform or saccate, abruptly narrowed into an incurved, slender spur. Upper petal orbicular, apex retuse, mucronulate; lateral united petals not clawed, 2-lobed; basal lobes yellow, red spotted, oblong, apex acute; distal lobes deep pink, dolabriform, apex rounded. Anthers obtuse. Capsule pendulous, narrowly clavate, 1.5-2 cm. Seeds many, oblong, smooth. Fl. and fr. Aug-Sep.
Home