Ghi chú nhận dạng và học tập

The lotus seed has a smooth hard coat and a central embryo that may be removed in commercial processing. The embryo, called Lian Xin, is a separate part with a distinct taste and traditional classification; do not treat a whole seed and an embryo-removal product as identical. Lotus grows rooted in mud with floating round leaves and a large flower, but the drug seed is harvested after the seed pod matures. Damp or rancid seeds can spoil, and seed identity does not prove hygienic processing. Record whether the lot is whole, hulled, split, or de-embryoed. As food, lotus seed still requires attention to allergy and choking risk for young children; medicinal products need separate review. The lotus seed collection should record whether the embryo remains, because food and materia-medica products may be sold in both forms. A whole seed can be stored dry for teaching, while a split seed exposes the embryo and helps identify processing. Do not use a seed lot with rancid odor or insect damage. The large lotus plant also requires a pond or contained water garden; it is not a dryland herb. Avoid uncontrolled garden release into natural wetlands. Anyone with swallowing problems should avoid whole hard seeds because they can present a choking hazard. Lot notes should state seed maturity and whether the embryo was removed; whole seed and Lian Xin are different study materials. Fresh lotus seeds and dried drug material differ in moisture and storage life. Keep each lot labelled and do not use damp seeds that smell fermented; traditional tonic labels do not prevent food spoilage.