Trait identification: dry lotus heart, slightly rod-shaped, 1.2 ~ 1.6 cm, the top green, with 2 divergent, one long and one short, the apex reflexed, close to each other, softened with water and then unfolded, can be seen in 2 peltate curls of the young leaves.
The central radicle is erect, about 2 mm long. The basal radicle is yellowish green, slightly cylindrical, 2-4 mm long. The texture is brittle, easy to break, the section has most small holes. Gas is absent, bitter taste. To a large, color green, uncooked is good, stored in dry containers, airtight, in a ventilated dry place, mildew, moth-proof.
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Expanded profile: When harvesting lotus seeds in the fall, the seeds are peeled open and the green embryo (lotus heart) is removed, which is the core of the lotus; the seeds are ellipsoid or ovate, 1.8-2.5 centimeters in length, the pericarp leathery, hard, and blackish-brown when ripe; the seeds (rosettes) are ovate or ellipsoid, 1.2-1.7 centimeters in length. Seed coat red or white, flowering June-August, fruiting August-October. Flower color is rich, mainly red, pink, white, green, yellow, etc. Flower type mainly has single petal, multi-petal, heavy petal and thousand petals. The leaves are dark green or yellowish green, peltate throughout, with wax adhering to the surface, so it is difficult for water to adsorb onto them and they are in the form of water droplets. The underground stem and petiole of the lotus have aeration holes, which is mainly the result of the lotus adapted to the growth of the water environment. The terminal bud at the top of the lotus underground stem, also known as the root thatch, which gives rise to a new underground stem internode, is known as the root band. References: