(1) The rhizome of Laminaria jinshi consists of several or more than ten nodes in succession. Fine roots several to dozens of densely below the rhizome, 10-20cm long, 1mm in diameter; cork skin brown, often off, off at the golden yellow, smooth; brittle and easy to break, flat section. Slight gas, bitter flavor, chewing sticky teeth.

(2) The rhizome of Plateau Tang Song Cao consists of several nodules, densely covered with dozens of fine roots. The root is slender, 5-10cm long, about 1mm in diameter; the surface is brown, the cork layer is sometimes detached, and the detached place is light brown. The texture is brittle, easy to break, the section is slightly fibrous. Slightly bitter flavor.

(3) the leafy Tang pine grass rhizome transverse, by several to more than ten nodes connected, each node on the mask round cavity-like stem scar, about 1cm in diameter. fine roots several to more than ten kilns born in the lower side of the rhizome, 3mm in diameter; surface gray-brown; hard, easy to fracture, fracture center can be seen graphic golden-yellow wood heart. The flavor is slightly bitter.

(4) Baikal Tang Song Cao fine roots dozens of dense on the rhizome. Surface yellow-brown, fine roots soft and twisted.

(5) Long column of Baikal Tang Song Cao is the same as Baikal Tang Song Cao rhizome and root.

(6) Huang Tang Song Cao fine root most densely born on the rhizome, 5-10cm long, about 2mm in diameter. surface gray-yellow-white. (1) Golden horsetail even the outer skin has been shed. The outermost is 1 row of endodermal cells, the mother cell is large, rectangular, each mother cell is divided into 4-5 sub-cells. Several rows of stone cells are visible in the area of the mesostylar sheath. The phloem is broad, with ten to dozens of phloem fibers in bundles, arranged in 2-3 whorls, and clusters of encircled sieve tubes are seen in most fiber bundles. Forming layers in rings. Xylem in solid columns, with 5-6 bundles of microlignified wood fibers set in between, arranged in a stellate pattern, with one larger fiber bundle in the center.

(2) The epidermis of Highland Downy Pine Grass is detached. The outermost is 1 column of endodermal cells; inside is 2-4 columns of mesostylar sheath fibers connected in a ring. The xylem bundles are three in number, arranged interspersed with the three fiber bundles in the wood rays in a radial pattern, and the fibers are strongly lignified.

(3) Multi-leafed Downy Pine Grass cork cells 3-4 columns. The phloem is broad and the sieve tube cluster is scattered. Xylem consists of ducts, wood fibers, and lignified thin-walled cells. Thicker roots have a few occasional fiber bundles in the phloem near the formation layer.

(4) Baikal Don Pineweed endodermal cells in 1 row, xylem composed of ducts and fibers, 3-4 bundles with 1 central fiber bundle.