The picture is provided by the registered user "talk about life", the copyright statement feedback
Bluegrass root is cylindrical, slightly twisted, 10-20cm long, 0.3-1.2cm in diameter. Slightly twisted, 10-20cm long, 0.3-1.2cm in diameter, gray-yellow surface, with longitudinal wrinkles and root scars. There are longitudinal wrinkles and root scars. The lenticels are long and transverse. The root head is slightly enlarged, and the dark green petiole residues and dense warty protrusions arranged in whorls can be seen. The texture is slightly soft and solid, easy to break, the fracture surface of the skin part of yellow-white, yellow wood. The flavor is slightly sweet and then bitter and astringent.
1, big blue root
Slim cylindrical, about 10-20-30 cm long, 3-8 mm in diameter.
Surface light gray-yellow, rough, with longitudinal wrinkles and transverse spots, and branching root scars, the root head is slightly enlarged, there is a concave fossa at the top, surrounded by dark green petiole residue, the thicker roots and now dense warty protuberances and whorls of gray-brown petiole scars.
The texture is firm and brittle, the fracture surface is yellowish-white to light brown in the cortex and yellow in the xylem.
Aroma is weak and slightly sweet.
The root is best if it is flat, straight, thick, firm and powdery.
Mainly produced in Hebei, Jiangsu, Anhui and other places.
2, horse blue root
For the plant horse blue dry rhizome and root, the whole length of 10 ~ 30 cm, gray-brown.
The rhizome is cylindrical, about 2-6 mm in diameter, with short above-ground stems in the upper part, the above-ground stems have opposite branches, and the rhizome has expanded nodes, which are divided into slightly thicker rhizomes and slender fibrous roots.
The roots are slender and slightly curved, with a finely wrinkled surface.
The rhizome and above-ground stem are brittle and easy to break, the section is uneven, slightly fibrous, with a large pith in the center; the root is more pliable.
Gas is absent, flavor is light.
The long, uniform thickness of the strip is preferred.