The leaves are different, the flowers are different, and the roots are different.

1. The leaves are different: the leaves of Acorus chinensis are narrow and long, 20-30 cm long, with golden lines on the edge and center of the leaf, and the texture is thicker, while the leaves of Acorus calamus are longer, The length is 30-50 cm, the leaves are thin and dark green.

2. Flowers are different: the flowers of Acorus are in spikes, cylindrical in shape, 3-9.5 cm long, with small white flowers. The flowering period is from May to June every year, and the flowering period of Acorus is earlier. , blooms around February, the flowers are triangular in shape, and the colors are yellow-white and yellow-green.

3. Different rhizomes: The roots of Acorus chinensis are fleshy, with densely distributed fibrous roots, and the rhizome can reach about 15 cm long, while the rhizomes of Acorus calamus are flat cylindrical, with slender roots and many bending points. Colors are gray-brown and tan.