Nga truật chữa vết thâm tím trên daCây nga truật còn gọi là nghệ đen, nghệ tím, ngãi tím. Tên khoa học Curcuma zedoaria (Berg.) Roscoe, thuộc họ gừng (Zingiberaceae).
Cây thảo cao tới 1,5m, thân rễ hình nón có khía chạy dọc, mang nhiều củ có thịt màu vàng tái. Ngoài những củ chính còn có những củ phụ có cuống hình trứng hay quả lê màu trắng. Lá có đốm đỏ ở gân chính, dài 30 - 60cm, rộng 7 - 8cm. Cụm hoa ở đất, thường mọc trước khi có lá. Lá bắc ở dưới xanh nhạt, lá bắc trên vàng và đỏ. Hoa vàng, môi lõm ở bầu, bầu có lông mịn.Phụ nữ có thai và rong kinh không nên dùngThân rễ nga truật có vị đắng, cay, tính ấm, mùi thơm, hăng.
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xJDhu6lFcVPhu7Fxw5RG4buERHHhu4BF4buExJBx4buAxJDhu4rhu4REceG7hOG6pOG7hHHEguG7luG7hEThu5NxZcSQ4bqwRnFlReG7hHHhu5Lhu57Dgw==