Morphological characteristics
Classification
The product is a dry mature seed of Astragalus complanatus R.Brown. When the fruit matures in late fall and early winter, the plants are cut, sun dried, and seeds are placed to remove impurities and dried.
Perennial herbaceous plant form, 30 to 100 cm high. Stems are weaker, slightly flattened, often lying at base, white pilose. Pinnate leaves alternate; leaflets 9 to 21, elliptic, 0.7 to 2 cm long, 3 to 8 mm wide, below a white pilose; stipules small, lanceolate. Racemes axillary, flowers 3 to 7; calyx bell-shaped, calyx teeth 5, nearly as long as calyx tube, with white pilose; corolla butterfly-shaped, light yellow, flag flap nearly circular, apex concave, keel About equal in length with wing valves; ovary densely white pilose, short ovary handle. Capsule swelling, spindle-shaped, length 2 ~ 3.5cm, apex at the end. Flowering from August to September, fruiting period from September to October.
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