Wa Leng Zi (Arca) (Straight ridges, like roof tiles) (Triangular and flat, shell raised, dozens of straight ridges like roof tiles, radiating from the top to the surroundings, with obvious ridges, the inner surface of the shell is milky white, smooth, and hard)
【Naming】
n 【Source】n
Bie Lu (Miscellaneous Records of Famous Physicians)
n 【Frequency of Use】n
E
n 【Botanical Origin】n
Shells of Arca inflata Reeve, Arca subcrenata Lischke, or Arca granosa L. belonging to the Arcidae family.
n 【Appearance】n
The shell is fan-shaped or triangular, with the left and right shells being identical in shape, or the left shell slightly larger than the right shell. It is 2.5-8 cm long and 2-6 cm wide, with a raised back. There are dozens of straight ridges like roof tiles, radiating from the top to the surroundings, with obvious ridges, alternating between gray-brown and white. The inner surface of the shell is milky white and smooth, with indentations corresponding to the ribs on the upper edge, forming protruding serrations. The texture is hard, can be crushed, and the fracture surface is white. Odorless, tasteless.nThe three species are distinguished as follows: The shell of Arca inflata is 7-9 cm long, with 42-48 radial ribs. The shell of Arca subcrenata is 4-5 cm long, with 30-34 radial ribs. The shell of Arca granosa is 2.5-4.5 cm long, with 18-21 radial ribs.nCalcined Wa Leng Zi (Arca): Shaped like fragments of raw Wa Leng Zi (Arca) and mostly powdery, the surface is gray-brown, and the texture is loose and brittle.
n 【Processing】n
1. Wa Leng Zi (Arca) 2. Calcined Wa Leng Zi (Arca)
n 【Identification】n
The best quality is one that is of medium and even size, with a clean white inner color, and free of residual meat, sand, and soil.
n 【Identification Terms】n
1. Straight ridges: Wa Leng Zi (Arca) has radiating ribs extending in a straight line from the top of the shell to the ventral surface, commonly called straight ridges.n2. Roof tiles: Refers to the radial ribs on the back of the Wa Leng Zi (Arca) medicinal material. For example, Arca subcrenata has 30-34 roof tiles.
n 【Section】n
Invertebrate Category