Annuals, 30-60(-80) cm tall, black when dry, densely tawny hairy. Branches angled, densely pubescent. Leaves sessile or short petiolate; leaf blade broadly ovate, 0.8-5.5 X 0.4-6 cm, densely pubescent, 2-pinnatisect; pinnae 3 pairs, lowermost pair 2-pinnately parted; pinnules 1-3, linear to linear-lanceolate, 1-2 mm wide, margin entire. Racemes few flowered; bracts pinnately parted or pinnatisect. Calyx tube 1-1.5 cm, densely pubescent; lobes green, subequal, linear-lanceolate to oblong, 2.2-2.5 mm, outside densely pilose, inside pubescent, margin entire or 1-or 2-toothed. Corolla tube 1.2-1.4 cm; lower lip yellow, lobes ovate; upper lip red-purple, apex truncate. Filaments basally ciliolate. Ovary narrowly ovoid, ca. 4 mm. Capsule ovoid-oblong, ca. 1.5 cm X 2.5 mm, apex suboblique and apiculate. Seeds black, ca. 0.8 mm. Fl. Jun-Aug.
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A herb. It grows each year from seed. It is 30-60 cm tall. The branches are angled and hairy. The leaves are almost without leaf stalks. The leaves are broadly oval and 1-6 cm long by 1-6 cm wide. They are hairy. They are divided into 3 pairs of leaflets and the lowest pair are divided. There are a few flowers in a group. They are tube shape and the upper parts are red-purple and the lower parts yellow.
Meadows and grassy slopes in hills and low mountains. Dry mountain slopes, forests, inundated meadows, in stony soils, in pebbly and sandy places in valleys of rivers and lakes; at elevations from 800-3,400 metres.
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It is a temperate plant. In China it grows on dry mountain slopes between 800-3,400 m above sea level.
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